Chem 6 Sample exam 1 (150 points total) NAME:

Save this PDF as:

Size: px
Start display at page:

Download "Chem 6 Sample exam 1 (150 points total) NAME:"

Transcription

1 Chem 6 Sample exam 1 (150 points This is a closed book exam to which the Honor Principle The last page contains equations and physical constants; you can detach it for easy Please write clearly and SHOW YOUR WORK. If you need to write on the back of the exam paper, please indicate this Some questions are more challenging than others. Allot your time accordingly, and try to answer EVERY Please put your name both on this page and on page 2. NAME:

2 2 NAME: FOR GRADING USE ONLY Question 1 (15 pts)... Question 2 (12 pts)... Question 3 (10 pts)... Question 4 (14 pts)... Question 5 (16 pts)... Question 6 (15 pts)... Question 7 (20 pts)... Question 8 (14 pts)... Question 9 (14 pts)... Question 10 (20 pts)... TOTAL (150 pts)...===========

3 3 1. (15 pts, 5 each). Consider the reaction 2HI(g) ----> H 2 (g) + I 2 (g) At 443 C, the rate depends on [HI] as follows: [HI] (M) Rate (Ms 1 ) 7.5x x x10 2 a. Find the order of the reaction and the rate law. Explain your answer. b. Find the rate constant. Don't forget the units. c. Find the rate (don't forget the units) if [HI] is M.

4 4 2. (12 pts) (a, 3 pts each) Sketch an energy profile on the axes provided for 3 different reactions with the following characteristics (all energies are in kj/mol). Be sure to clearly label the energies of the reactants (R) and products (P), as well as E and E a. (a) E = 10, E a = 25 (b) E = 10, E a = 50 (a) E = 50, E a = 50 E E E reaction coordinate reaction coordinate reaction coordinate (b, 3 pts) Assume the frequency factor A is the same for all three forward reactions (R! P). Which of the three will have the greatest rate at 298 K? Explain your answer.

5 5 3. (10 pts) For Michaelis-Menten kinetics, we found in class that rate = k 2[E] 0 [S] k -1 + k 2 where K M = [S] + K M Find the value of [S] (in terms of the constants k 1, k 1, k 2, and K M ) for which the rate is half the maximum possible rate. Explain your answer. k 1

6 6 4. (14 pts) Consider this reaction, whose proposed mechanism is shown. C 2 H 6 + I 2 C 2 H 5 I + HI proposed mechanism I 2 k 1 2I k 2 I + C 2 H 6 k 3 C 2 H 5 + I 2 C 2 H 5 + HI C 2 H 5 I + I k 1 I + I I 2 a. (4 pts, 1 each) Label each step in the box as initiation (I), propagation (P) or termination (T). b. (10 pts) Find the rate law for the disappearance of C 2 H 6. Show your work. rate = d dt [C 2 H 6 ] =

7 7 5. (16 pts, 8 each) A and B are in a fast equilibrium. More slowly, A reacts to form C, and B yields D. A K eq B k 2 k 3 product ratio = C D [C] [D] = d dt d dt [C] [D] a. Find the product ratio (defined above) in terms of the equilibrium constant K eq and the rate constants k 2 and k 3. Show your work. b. TRUE or FALSE. Circle your answer and explain it. If the equilibrium involving A and B lies far on the left (favoring A), then C must be the major product.

8 6. (15 pts) Reaction of tetrafluoroethylene (C 2 F 4, important in making Teflon) to yield C 4 F 8 is second order in C 2 F 4. At 450 K, its rate constant is k = M 1 s 1. If the initial concentration of C 2 F 4 is M, find its concentration (be sure to include appropriate units) after 205 seconds. Show your work. 8

9 9 7. (20 pts) Consider the reaction 2N 2 O 5 (g) ----> 4NO 2 (g) + O 2 (g). Concentration vs time data was obtained at 2 different temperatures. T = 338K T = 318K Time (s) [N 2 O 5 ] (M) [N 2 O 5 ] (M) x x x x x x x x x x10 2 Find E a for this reaction. Include appropriate units, and show your work.

10 8. (14 pts) The ionization energy of gold (that's the energy required to remove an electron) is kj/mol. Is light of wavelength 225 nm capable of removing an electron from a gold atom? Circle your answer and explain it. YES NO 10

11 11 9. (14 pts) Consider an electron moving at an unknown velocity (it must be less than the speed of light, of course). (a, 6 pts) Find the maximum uncertainty in the velocity of the electron. (b, 8 pts) Find the minimum uncertainty in the position of the electron.

12 (20 pts, 4 each) Multiple choice. Circle your answers. No explanation needed, and no partial credit. 1. The half-life of 99 Mo is 67 hours. How much of a 1 gram sample remains after 268 hours? (a) 0.25 grams (b) 0.5 grams (c) grams (d) grams 2. Pick the true statement about reaction rates. a. For a first-order reaction, the rate is faster at the end than at the beginning. b. For a zero-order reaction, the rate increases steadily with time. c. For a second-order reaction, the rate doesn't depend on the initial concentrations. d. Third-order reactions are rare, because the probability of 3 molecules colliding simultaneously is very small. 3. The diagram below shows Arrhenius plots for two chemical reactions. Which reaction has the larger activation energy? Circle your choice. A B ln k A B 1/T 4. The de Broglie wavelength of an electron traveling at a speed of 10 5 m/s is (a) 7.3 nm (b) 1.2 nm (c) 4.6x10 21 nm (d)1.4x10 8 nm 5. Pick the false statement about the photoelectric effect. (a) No electrons are emitted by a given metal below a specific threshold frequency ν 0. (b) Laser light (at any frequency) is so intense that it can force the emission of electrons. (c) For light with frequency greater than hν 0, the kinetic energy of the emitted electrons increases linearly with the frequency of the light. (d) For light with frequency greater than the threshold frequency, the number of electrons emitted increases with the intensity of the light.

13 13 Equations, Constants, etc. rate = k[a] [A] = [A] 0 e kt ln[a] = ln[a] 0 kt t 1/2 = 0.693/k rate = k[a] = + kt [A] [A] 0 t 1/2 1 = k[a] 0 k = Ae Ea/RT lnk = lna E a RT rate = k 2[E] 0 [S] k -1 + k 2 where K [S] + K M = M k 1 R = Jmole 1 K 1 = Latmmole 1 K 1 T( C) = T(K) λ = h/mv = h/p pv = nrt KE = mv 2 /2 = hν hν 0 N 0 = 6.02x10 23 mole 1 E = mc 2 h = 6.626x10 34 Js x p h/2 c = 3x10 8 ms 1 h = h/2π 1 nm = 10 9 m λν = c E = hν = hc/λ electron mass = 9.11x10 31 kg p = mv 1J = 1kgm 2 /s 2

Chem 6 sample exam 1 (100 points total)

Chem 6 sample exam 1 (100 points total) Chem 6 sample exam 1 (100 points total) @ This is a closed book exam to which the Honor Principle applies. @ The last page contains several equations which may be useful; you can detach it for easy reference.

More information

Chem 6 Sample exam 3 (final) (200 points total) NAME:

Chem 6 Sample exam 3 (final) (200 points total) NAME: Chem 6 Sample exam 3 (final) (200 points total) @ This is a closed book exam to which the onor Principle applies. @ The last three pages contain equations, physical constants, a periodic table and other

More information

Chemistry 1A, Fall 2003 Midterm 1 Sept 16, 2003 (90 min, closed book)

Chemistry 1A, Fall 2003 Midterm 1 Sept 16, 2003 (90 min, closed book) Name: SID: TA Name: Chemistry 1A, Fall 2003 Midterm 1 Sept 16, 2003 (90 min, closed book) This exam has 38 multiple choice questions. Fill in the Scantron form AND circle your answer on the exam. Each

More information

Page 1 of 16. Final Exam 5.111

Page 1 of 16. Final Exam 5.111 Final Exam 5.111 Page 1 of 16 Write your name and your TA's name below. Do not open the exam until the start of the exam is announced. 1) Read each part of a problem thoroughly. Many of a problem s latter

More information

Chemistry 12 Dr. Kline 28 September 2005 Name

Chemistry 12 Dr. Kline 28 September 2005 Name Test 1 first letter of last name Chemistry 12 Dr. Kline 28 September 2005 Name This test consists of a combination of multiple choice and other questions. There should be a total of 24 questions on 8 pages;

More information

This is less than the speed of light, as it should be, which provides a useful check

This is less than the speed of light, as it should be, which provides a useful check Chem 6 sample Exam 2 solutions 1. (a) (1/2)mv 2 = hν φ. Since 274 nm is the maximum wavelength that will eject electrons, E = hc/λ = φ = (6.626x10 34 Js) (3x10 8 ms 1 )/(274 nm) (1m/10 9 nm) = 7.25x10

More information

Chem 6 Sample exam 2 (150 points total) NAME:

Chem 6 Sample exam 2 (150 points total) NAME: hem 6 Sample exam 2 (150 points total) @ This is a closed book exam to which the onor Principle applies. @ The last page contains equations and physical constants; you can detach it for easy reference.

More information

Chemistry 1A Fall 2000

Chemistry 1A Fall 2000 Chemistry 1A Fall 2000 Midterm Exam II, version A October 17, 2000 (Closed book, 75 minutes, 145 points) Name: SID: Section Number: T.A. Name: Exam information, extra directions, and useful hints to maximize

More information

R = J/mole K = cal/mole K = N A k B ln k = ( E a /RT) + ln A

R = J/mole K = cal/mole K = N A k B ln k = ( E a /RT) + ln A Chemistry 134 Prof. Jason Kahn Your Name: University of Maryland, College Park Your SID #: General Chemistry and Energetics Exam I (100 points) You have 53 minutes for this exam. Your Section # or time:

More information

Identification Sticker

Identification Sticker Chemistry 1A Midterm Exam 1 September 20, 2001 Page 1 of 10. (Closed Book, 90 minutes, 150 points) Version D Name: TA: SID: Section: Identification Sticker Test-taking strategy: PLEASE READ THIS FIRST!

More information

Chemistry 6 10:00 Section Time limit = 3 hours Spring There are two sections to this exam. Please read the instructions carefully.

Chemistry 6 10:00 Section Time limit = 3 hours Spring There are two sections to this exam. Please read the instructions carefully. Chemistry 6 10:00 Section Final Exam Time limit = 3 hours Spring 2005 Name There are two sections to this exam. Please read the instructions carefully. In the first section, there are 13 multiple choice

More information

Practice Questions Placement Exam for Exemption from Chemistry 120

Practice Questions Placement Exam for Exemption from Chemistry 120 Practice Questions Placement Exam for Exemption from Chemistry 120 Potentially Useful Information Avogadro's number = 6.0221420 10 23 h = 6.6260688 10 34 J s c = 2.9979246 10 8 m/s 1amu = 1.6605387 10

More information

Chemistry 1A, Spring 2006 Midterm Exam I, Version 1 Feb 6, 2006 (90 min, closed book)

Chemistry 1A, Spring 2006 Midterm Exam I, Version 1 Feb 6, 2006 (90 min, closed book) Chemistry 1A, Spring 2006 Midterm Exam I, Version 1 Feb 6, 2006 (90 min, closed book) Name: SID: Identification Sticker TA Name: Write your name on every page of this exam. This exam has 37 multiple choice

More information

Chem Hughbanks Exam 2, March 7, 2014

Chem Hughbanks Exam 2, March 7, 2014 Chem 107 - Hughbanks Exam 2, March 7, 2014 Key UI # Section 504 Exam 2, Key for n the last page of this exam, you ve been given a periodic table and some physical constants. You ll probably want to tear

More information

Chemistry 1A, Spring 2011 Midterm 1 February 7, 2011 (90 min, closed book)

Chemistry 1A, Spring 2011 Midterm 1 February 7, 2011 (90 min, closed book) Name: SID: TA Name: Chemistry 1A, Spring 2011 Midterm 1 February 7, 2011 (90 min, closed book) There are 40 multiple choice questions worth 3 points each. There is only one correct answer for each question

More information

Chemistry 1A, Fall 2002 Final Exam, Version A December 11, 2002 (3 hours, closed book)

Chemistry 1A, Fall 2002 Final Exam, Version A December 11, 2002 (3 hours, closed book) Name: SID: Chemistry 1A, Fall 2002 Final Exam, Version A December 11, 2002 (3 hours, closed book) TA: Section: Please read this first: Write your name and that of your TA on all pages; On the Scantron

More information

CH302 Unit7 Day 8 Activity Unit 7 Readiness Assessment Activity

CH302 Unit7 Day 8 Activity Unit 7 Readiness Assessment Activity CH302 Unit7 Day 8 Activity Unit 7 Readiness Assessment Activity Spring 2013 VandenBout/LaBrake Name: KEY UT EID: Please work in small groups and be prepared to answer via clicker. Discussion Point I: Thinking

More information

Practice Exam A Answer Key for Fall 2014

Practice Exam A Answer Key for Fall 2014 Practice Exam A Answer Key for Fall 2014 First Hour Exam 5.111. Write your name and your TA's name below. Do not open the exam until the start of the exam is announced. The exam is closed notes and closed

More information

Chemical standard state: 1 M solutes, pure liquids, 1 atm gases Biochemical standard state: ph 7, all species in the ionic form found at ph 7

Chemical standard state: 1 M solutes, pure liquids, 1 atm gases Biochemical standard state: ph 7, all species in the ionic form found at ph 7 Chemistry 271, Section 22xx Your Name: Prof. Jason Kahn University of Maryland, College Park Your SID #: General Chemistry and Energetics Exam II (100 points total) Your Section #: November 4, 2009 You

More information

Chemistry 1A, Spring 2007 Midterm Exam 3 April 9, 2007 (90 min, closed book)

Chemistry 1A, Spring 2007 Midterm Exam 3 April 9, 2007 (90 min, closed book) Chemistry 1A, Spring 2007 Midterm Exam 3 April 9, 2007 (90 min, closed book) Name: KEY SID: TA Name: 1.) Write your name on every page of this exam. 2.) This exam has 34 multiple choice questions. Fill

More information

Chemistry 271, Section 22xx University of Maryland, College Park. Final Exam (200 points total) May 14, 2010

Chemistry 271, Section 22xx University of Maryland, College Park. Final Exam (200 points total) May 14, 2010 Chemistry 271, Section 22xx University of Maryland, College Park General Chemistry and Energetics Prof. Jason Kahn Final Exam (200 points total) May 14, 2010 You have 120 minutes for this exam. Exams written

More information

Chemical standard state: 1 M solutes, pure liquids, 1 atm gases Biochemical standard state: ph 7, all species in the ionic form found at ph 7

Chemical standard state: 1 M solutes, pure liquids, 1 atm gases Biochemical standard state: ph 7, all species in the ionic form found at ph 7 Chemistry 271, Section 22xx Your Name: Prof. Jason Kahn University of Maryland, College Park Your SID #: General Chemistry and Energetics Exam II (100 points total) Your Section #: November 4, 2009 You

More information

Page 1 of 22 Final Exam December 21, PAGE 2 1. TRANSITION METALS (35 points) PAGE 3 2. TRANSITION METALS (10 points)

Page 1 of 22 Final Exam December 21, PAGE 2 1. TRANSITION METALS (35 points) PAGE 3 2. TRANSITION METALS (10 points) Page 1 of 22 Final Exam 5.111 December 21, 2011 Write your name and your TA's name below. Do not open the exam until the start of the exam is announced. 1) Read each part of a problem thoroughly. Many

More information

Chemical Kinetics. Chapter 13. Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Chemical Kinetics. Chapter 13. Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Chemical Kinetics Chapter 13 Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Chemical Kinetics Thermodynamics does a reaction take place? Kinetics how fast does

More information

CHEM Chapter 14. Chemical Kinetics (Homework) Ky40

CHEM Chapter 14. Chemical Kinetics (Homework) Ky40 CHEM 1412. Chapter 14. Chemical Kinetics (Homework) Ky40 1. Chlorine dioxide reacts in basic water to form chlorite and chlorate according to the following chemical equation: 2ClO 2 (aq) + 2OH (aq) ClO

More information

R = J/mole K = cal/mole K = N A k B K a K b = K w

R = J/mole K = cal/mole K = N A k B K a K b = K w Chemistry 271 22XX Prof. Jason Kahn Your Name: University of Maryland, College Park Your SID #: General Chemistry and Energetics Exam II (100 points) You have 53 minutes for this exam. Your Section # or

More information

Chemistry 1A, Spring 2009 Midterm 2, Version March 9, 2009 (90 min, closed book)

Chemistry 1A, Spring 2009 Midterm 2, Version March 9, 2009 (90 min, closed book) Name: SID: TA Name: Chemistry 1A, Spring 2009 Midterm 2, Version March 9, 2009 (90 min, closed book) There are 20 Multiple choice questions worth 2.5 points each. There are 3, multi-part short answer questions.

More information

Name. Chem 116 Sample Examination #2

Name. Chem 116 Sample Examination #2 page 1 of 8 Name Last 5 digits of Student Number: XXX X Chem 116 Sample Examination #2 This exam consists of eight (8) pages, including this cover page. Be sure your copy is complete before beginning your

More information

CHEMISTRY 102 FALL 2009 EXAM 2 FORM B SECTION 501 DR. KEENEY-KENNICUTT PART 1

CHEMISTRY 102 FALL 2009 EXAM 2 FORM B SECTION 501 DR. KEENEY-KENNICUTT PART 1 NAME CHEMISTRY 102 FALL 2009 EXAM 2 FORM B SECTION 501 DR. KEENEY-KENNICUTT Directions: (1) Put your name on PART 1 and your name and signature on PART 2 of the exam where indicated. (2) Sign the Aggie

More information

Chemistry 1A, Fall 2007 KEY Midterm Exam III November 13, 2007 (90 min, closed book)

Chemistry 1A, Fall 2007 KEY Midterm Exam III November 13, 2007 (90 min, closed book) Name: SID: Chemistry 1A, Fall 2007 KEY Midterm Exam III November 13, 2007 (90 min, closed book) TA: Section: Please read this first: Write your name and that of your TA on all 8 pages of the exam Test-taking

More information

Practice Exam A for Fall 2014 Exam 1

Practice Exam A for Fall 2014 Exam 1 Practice Exam A for Fall 2014 Exam 1 Page 1 of 8 pages First Hour Exam 5.111 Write your name and your TA's name below. Do not open the exam until the start of the exam is announced. The exam is closed

More information

Chemistry 1A, Fall 2004 Midterm Exam I, Version 1 Sept 21, 2004 (90 min, closed book)

Chemistry 1A, Fall 2004 Midterm Exam I, Version 1 Sept 21, 2004 (90 min, closed book) Chemistry 1A, Fall 2004 Midterm Exam I, Version 1 Sept 21, 2004 (90 min, closed book) Name: SID: Identification Sticker TA Name: Write your name on every page of this exam. This exam has 40 multiple choice

More information

Chapter 11: CHEMICAL KINETICS

Chapter 11: CHEMICAL KINETICS Chapter : CHEMICAL KINETICS Study of the rate of a chemical reaction. Reaction Rate (fast or slow?) Igniting gasoline? Making of oil? Iron rusting? We know about speed (miles/hr). Speed Rate = changes

More information

Supplemental Activities. Module: Atomic Theory. Section: Electromagnetic Radiation and Matter - Key

Supplemental Activities. Module: Atomic Theory. Section: Electromagnetic Radiation and Matter - Key Supplemental Activities Module: Atomic Theory Section: Electromagnetic Radiation and Matter - Key Introduction to Electromagnetic Radiation Activity 1 1. What are the two components that make up electromagnetic

More information

YOUR NAME (last name, first name)...answers... FALL 2018 MIDTERM. (Total number of pages = 10) (Total points = 110) (Total time = 110 minutes)

YOUR NAME (last name, first name)...answers... FALL 2018 MIDTERM. (Total number of pages = 10) (Total points = 110) (Total time = 110 minutes) CHEM 14A Instructor: Dr. Laurence Lavelle YOUR NAME (last name, first name)...answers... STUDENT ID#... FALL 2018 MIDTERM (Total number of pages = 10) (Total points = 110) (Total time = 110 minutes) **Carefully

More information

1. (24 points) 5. (8 points) 6d. (13 points) 7. (6 points)

1. (24 points) 5. (8 points) 6d. (13 points) 7. (6 points) 1 of 9 Third our Exam 5.111 Write your name and your TA's name below. Do not open the exam until the start of the exam is announced. The exam is closed notes and closed book. 1. Read all parts of each

More information

Placement Exam for Exemption from Chemistry 120 Fall 2006

Placement Exam for Exemption from Chemistry 120 Fall 2006 Placement Exam for Exemption from Chemistry 120 Fall 2006 Name: By submitting this exam you affirm that you have not consulted any person, book, website or any other source for assistance. You may use

More information

Chemistry 1A, Fall 2003 Midterm 2 Oct 14, 2003 (90 min, closed book)

Chemistry 1A, Fall 2003 Midterm 2 Oct 14, 2003 (90 min, closed book) Name: SID: TA Name: Chemistry 1A, Fall 2003 Midterm 2 Oct 14, 2003 (90 min, closed book) This exam has 45 multiple choice questions. Fill in the Scantron form AND circle your answer on the exam. Each question

More information

Chemistry 1A, Spring 2009 KEY Midterm 2, Version March 9, 2009 (90 min, closed book)

Chemistry 1A, Spring 2009 KEY Midterm 2, Version March 9, 2009 (90 min, closed book) Name: SID: TA Name: Chemistry 1A, Spring 2009 KEY Midterm 2, Version March 9, 2009 (90 min, closed book) There are 20 Multiple choice questions worth 2.5 points each. There are 3, multi-part, short answer

More information

concentrations (molarity) rate constant, (k), depends on size, speed, kind of molecule, temperature, etc.

concentrations (molarity) rate constant, (k), depends on size, speed, kind of molecule, temperature, etc. #73 Notes Unit 9: Kinetics and Equilibrium Ch. Kinetics and Equilibriums I. Reaction Rates NO 2(g) + CO (g) NO (g) + CO 2(g) Rate is defined in terms of the rate of disappearance of one of the reactants,

More information

Exam 4, Ch 14 and 15 December 7, Points

Exam 4, Ch 14 and 15 December 7, Points Chem 130 Name Exam 4, Ch 14 and 15 December 7, 2016 100 Points Please follow the instructions for each section of the exam. Show your work on all mathematical problems. Provide answers with the correct

More information

Advanced Placement. Chemistry. Integrated Rates

Advanced Placement. Chemistry. Integrated Rates Advanced Placement Chemistry Integrated Rates 204 47.90 9.22 78.49 (26) 50.94 92.9 80.95 (262) 52.00 93.94 83.85 (263) 54.938 (98) 86.2 (262) 55.85 0. 90.2 (265) 58.93 02.9 92.2 (266) H Li Na K Rb Cs Fr

More information

CHEM Exam 1 February 11, 2016 Constants and Equations: R = 8.31 J/mol-K. Beer-Lambert Law: A log bc. Michaelis-Menten Equation: v0 M

CHEM Exam 1 February 11, 2016 Constants and Equations: R = 8.31 J/mol-K. Beer-Lambert Law: A log bc. Michaelis-Menten Equation: v0 M CHEM 1423 - Exam 1 February 11, 2016 Constants and Equations: R = 8.31 J/mol-K Io Beer-Lambert Law: A log bc I Vm[ S] Michaelis-Menten Equation: v0 K [ S] M CHEM 1423 - Exam 1 February 11, 2016 Name (60)

More information

"V (last expression for ideal gas)

V (last expression for ideal gas) Chem 130A EXAM#1 2/16/05 Prof. Jay Groves Write solutions clearly on separate pages. 1. Answer true or false and provide your reason in 10 words or less. a. For any change of state, the sum of w + q is

More information

It must be determined from experimental data, which is presented in table form.

It must be determined from experimental data, which is presented in table form. Unit 10 Kinetics The rate law for a reaction describes the dependence of the initial rate of a reaction on the concentrations of its reactants. It includes the Arrhenius constant, k, which takes into account

More information

AP Chemistry. Free-Response Questions

AP Chemistry. Free-Response Questions 2018 AP Chemistry Free-Response Questions College Board, Advanced Placement Program, AP, AP Central, and the acorn logo are registered trademarks of the College Board. AP Central is the official online

More information

Chemical Kinetics. System LENGTH: VOLUME MASS Temperature. 1 gal = 4 qt. 1 qt = in 3. 1 L = qt. 1 qt = L

Chemical Kinetics. System LENGTH: VOLUME MASS Temperature. 1 gal = 4 qt. 1 qt = in 3. 1 L = qt. 1 qt = L Chemical Kinetics Practice Exam Chemical Kinetics Name (last) (First) Read all questions before you start. Show all work and explain your answers to receive full credit. Report all numerical answers to

More information

Page 1. (b) A system at equilibrium will shift from its equilibrium position if:

Page 1. (b) A system at equilibrium will shift from its equilibrium position if: Page 1 1. Circle the correct answer (1 8 pts total) ( points each) (a) The rate constant for a reaction will change if: i) a catalyst is added ii) the concentration of reactants is increased iii) T is

More information

CHAPTER 9 LECTURE NOTES

CHAPTER 9 LECTURE NOTES CHAPTER 9 LECTURE NOTES 9.1, 9.2: Rate of a reaction For a general reaction of the type A + 3B 2Y, the rates of consumption of A and B, and the rate of formation of Y are defined as follows: Rate of consumption

More information

Practice Questions Placement Exam for Entry into Chemistry 120

Practice Questions Placement Exam for Entry into Chemistry 120 Practice Questions Placement Exam for Entry into Chemistry 120 Potentially Useful Information Avogadro's number = 6.0221420 10 23 h = 6.6260688 10 34 J s c = 2.9979246 10 8 m/s 1amu = 1.6605387 10 27 kg

More information

Chemistry 1A, Spring 2009 Midterm 3 April 13, 2009

Chemistry 1A, Spring 2009 Midterm 3 April 13, 2009 Chemistry 1A, Spring 2009 Midterm 3 April 13, 2009 (90 min, closed book) Name: SID: TA Name: There are 20 Multiple choice questions worth 3 points each. There are 3, multi-part short answer questions.

More information

2/23/2018. Familiar Kinetics. ...and the not so familiar. Chemical kinetics is the study of how fast reactions take place.

2/23/2018. Familiar Kinetics. ...and the not so familiar. Chemical kinetics is the study of how fast reactions take place. CHEMICAL KINETICS & REACTION MECHANISMS Readings, Examples & Problems Petrucci, et al., th ed. Chapter 20 Petrucci, et al., 0 th ed. Chapter 4 Familiar Kinetics...and the not so familiar Reaction Rates

More information

Chemistry 1A, Fall 2006 Final Exam, Version B Dec 12, 2006 (180 min, closed book)

Chemistry 1A, Fall 2006 Final Exam, Version B Dec 12, 2006 (180 min, closed book) Name: SID: GSI Name: Chemistry 1A, Fall 2006 Final Exam, Version B Dec 12, 2006 (180 min, closed book) There are 60 Multiple choice questions worth 4.34 points each. There are 13 short answer questions.

More information

1. (4) For this reaction: NO 2. + H 3 AsO 3 D H 2 AsO 3

1. (4) For this reaction: NO 2. + H 3 AsO 3 D H 2 AsO 3 Exam 1 Chem 1B, Spring 2017 Fossum Name: There are 6 points of extra credit built in to this exam. Always show your work and explain your reasoning, include units, and check significant figures. Note:

More information

Chem 401 Unit 1 Exam: Thermodynamics & Kinetics (Nuss: Spr 2018)

Chem 401 Unit 1 Exam: Thermodynamics & Kinetics (Nuss: Spr 2018) Date: Exam # Chem 401 Unit 1 Exam: Thermodynamics & Kinetics (Nuss: Spr 2018) Multiple Choice Identify the choice that best completes the statement or answers the question. (3 pts each) 1. Which of the

More information

How many grams of ethylene glycol must be added to 6.00 kg of water to lower its freezing point to C? ETHYLENE GLYCOL:

How many grams of ethylene glycol must be added to 6.00 kg of water to lower its freezing point to C? ETHYLENE GLYCOL: How many grams of ethylene glycol must be added to 6.00 kg of water to lower its freezing point to -11.0 C? ETHYLENE GLYCOL: 77 KINETICS - the study of the RATE of chemical reactions. Or, the study of

More information

Dr. D. DeCoste T.A (80 pts.) 21 (30 pts.) 22 (25 pts.) 23 (25 pts.) Total (160 pts)

Dr. D. DeCoste T.A (80 pts.) 21 (30 pts.) 22 (25 pts.) 23 (25 pts.) Total (160 pts) CHEMISTRY 202 Hour Exam III December 6, 2018 Dr. D. DeCoste Name KEY Signature T.A. This exam contains 23 questions on 13 numbered pages. Check now to make sure you have a complete exam. You have two hours

More information

EXPERIMENT 7- SAPONIFICATION RATE OF TERT- BUTYL CHLORIDE

EXPERIMENT 7- SAPONIFICATION RATE OF TERT- BUTYL CHLORIDE 1 THEORY EXPERIMENT 7- SAPONIFICATION RATE OF TERT- BUTYL CHLORIDE The field of chemical kinetics is concerned with the rate or speed at which a chemical reaction occurs. Knowledge of a chemical reaction

More information

EXAM III Nov. 1, 2018

EXAM III Nov. 1, 2018 EM 105 Dr. Lammi Name: EXAM III Nov. 1, 2018 You may work until 10:50 to complete this exam. Please show all work in the space provided or on the attached scratch page. Remember to report your final answers

More information

Final Exam Chem 260 (12/20/99) Name (printed) Signature

Final Exam Chem 260 (12/20/99) Name (printed) Signature Final Exam Chem 260 (12/20/99) Name (printed) Signature 1. For the reaction, (14 pts total) C(graph) + CO 2 (g) 2 CO(g) (a) Write the equilibrium constant expression: (2 pts) K = P CO 2 P CO2 (b) Using

More information

Express the transition state equilibrium constant in terms of the partition functions of the transition state and the

Express the transition state equilibrium constant in terms of the partition functions of the transition state and the Module 7 : Theories of Reaction Rates Lecture 33 : Transition State Theory Objectives After studying this Lecture you will be able to do the following. Distinguish between collision theory and transition

More information

11/2/ and the not so familiar. Chemical kinetics is the study of how fast reactions take place.

11/2/ and the not so familiar. Chemical kinetics is the study of how fast reactions take place. Familiar Kinetics...and the not so familiar Reaction Rates Chemical kinetics is the study of how fast reactions take place. Some happen almost instantaneously, while others can take millions of years.

More information

b. Free energy changes provide a good indication of which reactions are favorable and fast, as well as those that are unfavorable and slow.

b. Free energy changes provide a good indication of which reactions are favorable and fast, as well as those that are unfavorable and slow. Chem 130 Name Exam 3, Ch 7, 19, 14 November 9, 2018 100 Points Please follow the instructions for each section of the exam. Show your work on all mathematical problems. Provide answers with the correct

More information

CHEMISTRY 2A Exam II

CHEMISTRY 2A Exam II Name Student ID Number TA Name Lab Section Winter 016 Enderle CHEMISTRY A Exam II Instructions: CLOSED BOOK EXAM! No books, notes, or additional scrap paper are permitted. All information required is contained

More information

Chemistry 1A Midterm Exam 1 February 12, Potentially Useful Information. Violet Blue Green Yellow Orange Red Wavelength (nm)

Chemistry 1A Midterm Exam 1 February 12, Potentially Useful Information. Violet Blue Green Yellow Orange Red Wavelength (nm) Chemistry 1A Midterm Exam 1 February 12, 2013 Professor Pines 5 pages total Student Name: Student ID#: Potentially Useful Information Violet Blue Green Yellow Orange Red 400 500 600 700 Wavelength (nm)

More information

[ A] 2. [ A] 2 = 2k dt. [ A] o

[ A] 2. [ A] 2 = 2k dt. [ A] o Chemistry 360 Dr Jean M Standard Problem Set 3 Solutions The reaction 2A P follows second-order kinetics The rate constant for the reaction is k350 0 4 Lmol s Determine the time required for the concentration

More information

Chemical Kinetics -- Chapter 14

Chemical Kinetics -- Chapter 14 Chemical Kinetics -- Chapter 14 1. Factors that Affect Reaction Rate (a) Nature of the reactants: molecular structure, bond polarity, physical state, etc. heterogeneous reaction: homogeneous reaction:

More information

CHEMISTRY 102 FALL 2010 EXAM 2 FORM B SECTION 501 DR. KEENEY-KENNICUTT PART 1

CHEMISTRY 102 FALL 2010 EXAM 2 FORM B SECTION 501 DR. KEENEY-KENNICUTT PART 1 NAME CHEMISTRY 102 FALL 2010 EXAM 2 FORM B SECTION 501 DR. KEENEY-KENNICUTT Directions: (1) Put your name on PART 1 and PART 2 of the exam where indicated. (2) Sign the Aggie Code on PART 2 of this exam.

More information

CHEM 101 Exam 3. Page 1. November 5, 2001

CHEM 101 Exam 3. Page 1. November 5, 2001 Form 2 (Ivory) November 5, 2001 Page 1 This exam consists of 8 pages. When the exam begins make sure you have one of each. Print your name at the top of each page now The last page is blank and you may

More information

There are eight problems on the exam. Do all of the problems. Show your work

There are eight problems on the exam. Do all of the problems. Show your work CHM 3400 Fundamentals o Physical Chemistry Final Exam April 23, 2012 There are eight problems on the exam. Do all o the problems. Show your work R = 0.08206 L. atm/mole. K N A = 6.022 x 10 23 R = 0.08314

More information

An object capable of emitting/absorbing all frequencies of radiation uniformly

An object capable of emitting/absorbing all frequencies of radiation uniformly 1 IIT Delhi - CML 100:1 The shortfalls of classical mechanics Classical Physics 1) precise trajectories for particles simultaneous specification of position and momentum 2) any amount of energy can be

More information

FRONT PAGE FORMULA SHEET - TEAR OFF

FRONT PAGE FORMULA SHEET - TEAR OFF FRONT PAGE FORMULA SHEET - TEAR OFF N A = 6.022 x 10 23 C = ( 5 / 9 ) ( F - 32) F = ( 9 / 5 )( C) + 32 1 amu = 1.661 x 10-27 kg C = K - 273.15 K = C + 273.15 1 atm = 760 torr = 760 mm Hg 1 atm = 1.013

More information

Chapter 14 Homework Answers

Chapter 14 Homework Answers Chapter 14 Homework Answers 14.47 The slope of the tangent to the curve at each time is the negative of the rate at each time: Rate 60 = 8.5 10 4 mol L 1 s 1 Rate 120 = 4.0 10 4 mol L 1 s 1 14.49 From

More information

1. For both these compounds, the formal oxidation state is Mn(II), which is d 5.

1. For both these compounds, the formal oxidation state is Mn(II), which is d 5. Sample final exam answers 1. For both these compounds, the formal oxidation state is Mn(II), which is d 5. Since NCS is a weak-field, high-spin ligand (from the spectrochemical series), the electron configuration

More information

Key for Unit Exam: Kinetics

Key for Unit Exam: Kinetics Key for Unit Exam: Kinetics On the following pages are problems covering material in kinetics. Read each question carefully and consider how you will approach it before you put pen or pencil to paper.

More information

Chem 1A, Fall 2015, Midterm Exam 1. Version A September 21, 2015 (Prof. Head-Gordon) 2

Chem 1A, Fall 2015, Midterm Exam 1. Version A September 21, 2015 (Prof. Head-Gordon) 2 Chem 1A, Fall 2015, Midterm Exam 1. Version A September 21, 2015 (Prof. Head-Gordon) 2 Name: Student ID: TA: Contents: 9 pages A. Multiple choice (7 points) B. Stoichiometry (10 points) C. Photoelectric

More information

Practice Questions for Exam 2 CH 1020 Spring 2017

Practice Questions for Exam 2 CH 1020 Spring 2017 Practice Questions for Exam 2 CH 1020 Spring 2017 1. Pick all of the statements which are true about a reaction mechanism?. A rate law can be written from the molecularity of the slowest elementary step..

More information

Chapter 12. Chemical Kinetics

Chapter 12. Chemical Kinetics Chapter 12 Chemical Kinetics Section 12.1 Reaction Rates Section 12.1 Reaction Rates Section 12.1 Reaction Rates Section 12.1 Reaction Rates Section 12.1 Reaction Rates Section 12.1 Reaction Rates Section

More information

This test is closed note/book. One 8.5 x 11 handwritten crib sheet (one sided) is permitted.

This test is closed note/book. One 8.5 x 11 handwritten crib sheet (one sided) is permitted. Exam3 TestFormA Chem1310 Fall2008 11/24/2008 Dr.Williams PrintName Signature This test is closed note/book. One 8.5 x 11 handwritten crib sheet (one sided) is permitted. Use a #2 pencil. Calculators are

More information

Zero Order First Order Second Order. ln[a]t = k t + ln[a]0. [A]t = [A]0 e -kt 1 /[A]t = k t + ( 1 /[A]0 )

Zero Order First Order Second Order. ln[a]t = k t + ln[a]0. [A]t = [A]0 e -kt 1 /[A]t = k t + ( 1 /[A]0 ) Kinetics (ch 14) Cañada College Chem 220 Name: Student ID: Zero Order First Order Second Order Dif Law Rate = k Rate = k [A] Rate = k [A] 2 Int Law [A]t = k t + [A]0 ln[a]t = k t + ln[a]0 [A]t = [A]0 e

More information

BCIT Winter Chem Exam #1

BCIT Winter Chem Exam #1 BCIT Winter 2014 Chem 0012 Exam #1 Name: Attempt all questions in this exam. Read each question carefully and give a complete answer in the space provided. Part marks given for wrong answers with partially

More information

3: Chemical Kinetics Name: HW 6: Review for Unit Test KEY Class: Date: A Products

3: Chemical Kinetics Name: HW 6: Review for Unit Test KEY Class: Date: A Products 3: Chemical Kinetics Name: HW 6: Review for Unit Test KEY Class: Date: Page 1 of 9 AP Multiple Choice Review Questions 1 16 1. The reaction rate is defined as the change in concentration of a reactant

More information

Kinetics - Chapter 14. reactions are reactions that will happen - but we can t tell how fast. - the steps by which a reaction takes place.

Kinetics - Chapter 14. reactions are reactions that will happen - but we can t tell how fast. - the steps by which a reaction takes place. The study of. Kinetics - Chapter 14 reactions are reactions that will happen - but we can t tell how fast. - the steps by which a reaction takes place. Factors that Affect Rx Rates 1. The more readily

More information

Learning Guide for Chapter 7 - Organic Reactions I

Learning Guide for Chapter 7 - Organic Reactions I Learning Guide for Chapter 7 - rganic Reactions I I. Introduction to Reactions II. Principles of Kinetics III. Principles of Thermodynamics IV. cleophiles and Electrophiles V. Acids and Bases What a chemical

More information

Chemistry 1A, Fall 2006 Final Exam, Version B Dec 12, 2006 (180 min, closed book)

Chemistry 1A, Fall 2006 Final Exam, Version B Dec 12, 2006 (180 min, closed book) Name: SID: GSI Name: Chemistry 1A, Fall 2006 Final Exam, Version B Dec 12, 2006 (180 min, closed book) There are 60 Multiple choice questions worth 4.34 points each. There are 13 short answer questions.

More information

Exam I. Rate Laws Activation Energies Mechanisms Radioactive Decay

Exam I. Rate Laws Activation Energies Mechanisms Radioactive Decay Exam I Rate Laws Activation Energies Mechanisms Radioactive Decay Kinetics and Activation Energy 1) Rate information was obtained for the following reaction at 5C and 33C; Cr(H O) 6 3+ + SCN - ---> Cr(H

More information

CHEMISTRY 107 Section 501 Exam #2 Version A October 20, 2017 Dr. Larry Brown

CHEMISTRY 107 Section 501 Exam #2 Version A October 20, 2017 Dr. Larry Brown NAME: (print) UIN #: CHEMISTRY 107 Section 501 Exam #2 Version A October 20, 2017 Dr. Larry Brown This is a 50-minute exam, and contains 23 multiple-choice questions and 3 free response problems. Point

More information

DO NOT TURN THE PAGE UNTIL INSTRUCTED TO DO SO!

DO NOT TURN THE PAGE UNTIL INSTRUCTED TO DO SO! The University of British Columbia Okanagan CHEM 121 ATOMIC & MOLECULAR CHEMISTRY Final Exam, Fall 2011 Wednesday, Dec 14, 9AM Name: Circle your Section: Student Number: McNeil / Neeland Signature: DO

More information

Name: Date: 3. Which is more concentrated (circle one.): 14.0 ppm CO 2 OR ppb CO 2?

Name: Date: 3. Which is more concentrated (circle one.): 14.0 ppm CO 2 OR ppb CO 2? Name: Date: There are 25 questions totaling 90 points (scored out of 100 pts with Internship Activity). PLEASE look over the entire examination (8 pages total) BEFORE you begin to ensure your packet is

More information

Chemistry 271, Section 21xx University of Maryland, College Park

Chemistry 271, Section 21xx University of Maryland, College Park Chemistry 271, Section 21xx University of Maryland, College Park General Chemistry and Energetics Prof. Jason Kahn Final Exam (200 points total) May 15, 2009 You have 120 minutes for this exam. Exams written

More information

1 The Cathode Rays experiment is associated. with: Millikan A B. Thomson. Townsend. Plank Compton

1 The Cathode Rays experiment is associated. with: Millikan A B. Thomson. Townsend. Plank Compton 1 The Cathode Rays experiment is associated with: A B C D E Millikan Thomson Townsend Plank Compton 1 2 The electron charge was measured the first time in: A B C D E Cathode ray experiment Photoelectric

More information

CHAPTER 13 (MOORE) CHEMICAL KINETICS: RATES AND MECHANISMS OF CHEMICAL REACTIONS

CHAPTER 13 (MOORE) CHEMICAL KINETICS: RATES AND MECHANISMS OF CHEMICAL REACTIONS CHAPTER 13 (MOORE) CHEMICAL KINETICS: RATES AND MECHANISMS OF CHEMICAL REACTIONS This chapter deals with reaction rates, or how fast chemical reactions occur. Reaction rates vary greatly some are very

More information

Kinetics CHAPTER IN THIS CHAPTER

Kinetics CHAPTER IN THIS CHAPTER CHAPTER 14 Kinetics IN THIS CHAPTER Summary: Thermodynamics often can be used to predict whether a reaction will occur spontaneously, but it gives very little information about the speed at which a reaction

More information

Chemistry 1A, Spring 2006 Midterm Exam II, Version 1 March 6, 2006 (90 min, closed book)

Chemistry 1A, Spring 2006 Midterm Exam II, Version 1 March 6, 2006 (90 min, closed book) Chemistry 1A, Spring 2006 Midterm Exam II, Version 1 March 6, 2006 (90 min, closed book) Name: SID: Identification Sticker TA Name: Write your name on every page of this exam. This exam has 38 multiple

More information

Chem. 6C Midterm 2 Version A November 13, 2007

Chem. 6C Midterm 2 Version A November 13, 2007 Chem. 6C Midterm 2 Version A November 13, 2007 Name Student Number TA Name Section Time All work must be shown on the exam for partial credit. Points will be taken off for incorrect or no units. Non graphing

More information

CHEMISTRY 107 Section 501 Final Exam Version A December 12, 2016 Dr. Larry Brown

CHEMISTRY 107 Section 501 Final Exam Version A December 12, 2016 Dr. Larry Brown NAME: (print) UIN #: CHEMISTRY 107 Section 501 Final Exam Version A December 12, 2016 Dr. Larry Brown This is a 2-hour exam, and contains 11 problems. There should be 14 numbered pages, including this

More information

c = λν 10/23/13 What gives gas-filled lights their colors? Chapter 5 Electrons In Atoms

c = λν 10/23/13 What gives gas-filled lights their colors? Chapter 5 Electrons In Atoms CHEMISTRY & YOU What gives gas-filled lights their colors? Chapter 5 Electrons In Atoms 5.1 Revising the Atomic Model 5. Electron Arrangement in Atoms 5.3 Atomic and the Quantum Mechanical Model An electric

More information

First Midterm Examination October 17, There should be 19 pages to this exam, counting this cover sheet. Please check this exam NOW!

First Midterm Examination October 17, There should be 19 pages to this exam, counting this cover sheet. Please check this exam NOW! V25.0109: General Chemistry I (Honors) Professor M.E. Tuckerman First Midterm Examination October 17, 2008 NAME and ID NUMBER: There should be 19 pages to this exam, counting this cover sheet. Please check

More information

U N I T T E S T P R A C T I C E

U N I T T E S T P R A C T I C E South Pasadena AP Chemistry Name 2 Chemical Kinetics Period Date U N I T T E S T P R A C T I C E Part 1 Multiple Choice You should allocate 30 minutes to finish this portion of the test. No calculator

More information