AP* Gas Law Free Response Questions KEY

Size: px
Start display at page:

Download "AP* Gas Law Free Response Questions KEY"

Transcription

1 AP* Gas Law Free Response Questions KEY Page P CO = P atm - P H2O = ( ) torr = torr n PV ( torr )( L ) = RT = L _ torr ( mol _ K )( K ) = mol mol H COONa mol g 2 mol C O 1 mol = g g/0.964 g 100 = 67.9% 1971 (a) (b) P C6H6 = χp C6H6 = ( 49 / 50 )(75 torr) = 73.5 torr P T = χp tol. + χp benz. = ( 3 / 4 )(22 torr) + ( 1 / 4 )(75 torr) = 35.3 torr. 1 ( 4 )( 75torr) χ benz. = = torr 1972 (a) n = PV RT = 740 ( 760 atm ) ( L ) L _ atm ( mol _ K ) ( 295 K ) = mol C O 2 K 2 CO HCl 2 KCl + CO 2 + H 2 O mol CO 2 1 mol K 2 CO 3 1 mol C O g K 2 CO 3 1 mol K 2 CO 3 = 1.38 g K 2 CO g K 2 CO g m ix 100 % = % K 2 CO 3 (b) KOH + HCl K + + Cl - + H 2 O 0.100L H Cl 2.0 mol 1 L = mol H Cl 2( mol) = mol HCl reacted with K 2 CO 3 1 mol NaOH = 1 mol HCl L N aoh 1.5 mol 1 L = mol H Cl excess mol HCl reacted = ( )mol = mol 0.050mol H Cl 1mol K OH 56.1g K OH 1mol H Cl 1mol K OH = 2. 81g (1) AP is a registered trademark of the College Board. The College Board was not involved in the production of and does not endorse this product. (2) Test Questions are Copyright by College Entrance Examination Board, Princeton, NJ. All rights reserved. For face-to-face teaching purposes, classroom teachers are permitted to reproduce the questions. Web or Mass distribution prohibited.

2 2.81 g KOH 100 % = % KOH 5.00 g m ix KCl = ( )% = 16.1% KCl Page 2 AP* Gas Law Free Response Questions page (a) 6.19 g PCl 5 / g/mol = mol PCl 5 P = nrt V = ( mol )( L _ atm mol _ K )( K ) 2. 00L = atm = 487 mm Hg (b) P PCl3 = P Cl2 = X; P PCl5 = ( X) mm Hg P T = 1.00 atm = ( X) + X + X X= atm = P PCl3 = P Cl2 P PCl5 = ( ) atm = atm = 220 mm 1976 Useful realtionship is: M= (grt)/(pv). Significant intermolecular attraction exists at temperatures not far above boiling point. Therefore, the compressibility of the gas is greater and the value of PV is smaller than predicted. This would lead to a higher value for the molecular weight than the true value a) 2 points Real molecules exhibit finite volumes, thus excluding some volume from compression. Real molecules exhibit attractive forces, thus leading to fewer collisions with the walls and a lower pressure. b) 3 points SO 2 is the least ideal gas. It has the largest size or volume. It has the stongest attractive forces ( van der Waals forces or dipole-dipole interactions). c) 3 points High temperature results in high kinetic energies. This energy overcomes the attractive forces. Low pressure increases the distance between molecules. (So molecules comprise a small part of volume or attractive forces are small)

3 Page 3

4 Page 4

5 Page 5

6 Page 6

7 Page 7

8 Page 8

9 Page 9

10 Page 10 AP CHEMISTRY 2002 SCORING GUIDELINES (Form B) Question 2 10 points 2. A rigid 8.20 L flask contains a mixture of 2.50 moles of H 2, mole of O 2, and sufficient Ar so that the partial pressure of Ar in the flask is 2.00 atm. The temperature is 127ºC. (a) Calculate the total pressure in the flask. P H2 = n H2 RT V P O2 = n O2 RT V P Ar = 2.0 atm = = L atm ( 2.50 mol)( )(400K) mol K = 10.0 atm 8.20 L L atm (0.500 mol)( )(400 K) mol K = 2.00 atm 8.20 L for the partial pressure of H 2 for the partial pressure of O 2 P T = P H2 + P O2 + P Ar = 10.0 atm atm atm = 14.0 atm for the total pressure (b) Calculate the mole fraction of H 2 in the flask. Mol fraction H2 = mol H2 mol H2 + mol O2 + mol Ar mol H2 = 2.50 mol mol O2 = mol mol Ar = PV RT = (2.00 atm)(8.20 L) L atm ( )(400 K) = mol Ar mol K mol H2 + mol O2 + mol Ar = 2.50 mol mol mol = 3.50 mol total Mol fraction H2 = mol H mol mol H2 + mol O2 + mol Ar = = mol for mol Ar for mol fraction of H 2 Copyright 2002 by College Entrance Examination Board. All rights reserved. Advanced Placement Program and AP are registered trademarks of the College Entrance Examination Board. 5

11 Page 11 AP CHEMISTRY 2002 SCORING GUIDELINES (Form B) Question 2 (cont d.) (c) Calculate the density (in g L 1 ) of the mixture in the flask 2.50 mol H g H 2 1 mol H = 5.04 g H mol O g O 2 1 mol O = 16.0 g O mol Ar 40.0 g Ar 1 mol Ar = 20.0 g Ar total mass = 5.04 g g g = 41.0 g density = totalmass volume = 41.0 g 8.20 L = 5.00 g L 1 for mass of all species for density The mixture in the flask is ignited by a spark, and the reaction represented below occurs until one of the reactants is entirely consumed. 2 H 2 (g) + O 2 (g) 2H 2 O(g) (d) Give the mole fraction of all species present in the flask at the end of the reaction. 2 H 2 (g) + O 2 (g) 2 H 2 O(g) I C (+0.500) E for 1.00 mol H 2 O total moles after reaction = mol H2 + mol H2 O + mol Ar = 1.50 mol mol mol = 3.00 mol total 1.50 mol H 2 mol fraction H2 = = mol 0 mol O 2 mol fraction O2 = = 0 (not necessary) 3.00 mol mol Ar mol fraction Ar = = mol mol fraction H2 O = 1.00 mol H 2O = mol for total moles for any two mol fractions, excluding O 2 Copyright 2002 by College Entrance Examination Board. All rights reserved. Advanced Placement Program and AP are registered trademarks of the College Entrance Examination Board. 6

2012 AP CHEMISTRY FREE-RESPONSE QUESTIONS

2012 AP CHEMISTRY FREE-RESPONSE QUESTIONS 01 AP CHEMISTRY FREE-RESPONSE QUESTIONS. A sample of a pure, gaseous hydrocarbon is introduced into a previously evacuated rigid 1.00 L vessel. The pressure of the gas is 0.00 atm at a temperature of 17C.

More information

Name AP Chemistry / / Chapter 5 Collected AP Exam Free Response Questions Answers

Name AP Chemistry / / Chapter 5 Collected AP Exam Free Response Questions Answers Name AP Chemistry / / Chapter 5 Collected AP Exam Free Response Questions 1980 2010 - Answers 1982 - #5 (a) From the standpoint of the kinetic-molecular theory, discuss briefly the properties of gas molecules

More information

AP* Kinetics Free Response Questions KEY page 1

AP* Kinetics Free Response Questions KEY page 1 AP* Kinetics Free Response Questions KEY page 1 Essay Questions 1983 a) three points Plot ln k or log k vs 1/T Eact = - R (slope) or - 2,303 R (slope) For partial credit, if the 2-point equation is given

More information

AP* States of Matter & Intermolecular Forces Free Response KEY page 1

AP* States of Matter & Intermolecular Forces Free Response KEY page 1 AP* States of Matter & Intermolecular Forces Free Response KEY page 1 1991 a) three points MgCl 2 is ionic and SiCl 4 is covalent. The elctrostatic, interionic forces in MgCl 2 are much stronger than the

More information

AP* General Equilibrium Free Response Questions page 1

AP* General Equilibrium Free Response Questions page 1 AP* General Equilibrium Free Response Questions page 1 General Equilibrium Problems 1983 Sulfuryl chloride, SO 2 Cl 2, is a highly reactive gaseous compound. When heated, it decomposes as follows: SO 2

More information

AP* Electrochemistry Free Response Questions page 1

AP* Electrochemistry Free Response Questions page 1 Galvanic (Voltaic) Cells 1988 Average score = 5.02 a) two points Sn ---> Sn 2+ + 2e Ag + + e ---> Ag AP* Electrochemistry Free Response Questions page 1 b) two points 2 Ag + + Sn ---> 2 Ag + Sn 2+ E =

More information

AP* General Equilibrium Free Response Questions page 1

AP* General Equilibrium Free Response Questions page 1 AP* General Equilibrium Free Response Questions page 1 General Equilibrium Problems 1983 Sulfuryl chloride, SO 2 Cl 2, is a highly reactive gaseous compound. When heated, it decomposes as follows: SO 2

More information

AP* Thermodynamics Free Response Questions page 1. Essay Questions

AP* Thermodynamics Free Response Questions page 1. Essay Questions AP* Thermodynamics Free Response Questions page 1 Essay Questions 1991 The reaction represented above is a reversible reaction. BCl 3 (g) + NH 3 (g) Cl 3 BNH 3 (s) (a) Predict the sign of the entropy change,

More information

1. What is the value of the quantity PV for one mole of an ideal gas at 25.0 C and one atm?

1. What is the value of the quantity PV for one mole of an ideal gas at 25.0 C and one atm? Real Gases Thought Question: How does the volume of one mole of methane gas (CH4) at 300 Torr and 298 K compare to the volume of one mole of an ideal gas at 300 Torr and 298 K? a) the volume of methane

More information

AP* Bonding & Molecular Structure Free Response Questions page 1

AP* Bonding & Molecular Structure Free Response Questions page 1 AP* Bonding & Molecular Structure Free Response Questions page 1 Essay Questions 1991 a) two points ΔS will be negative. The system becomes more ordered as two gases orm a solid. b) two points ΔH must

More information

Chapter 11 Gases 1 Copyright McGraw-Hill 2009

Chapter 11 Gases 1 Copyright McGraw-Hill 2009 Chapter 11 Gases Copyright McGraw-Hill 2009 1 11.1 Properties of Gases The properties of a gas are almost independent of its identity. (Gas molecules behave as if no other molecules are present.) Compressible

More information

Exercises. Pressure. CHAPTER 5 GASES Assigned Problems

Exercises. Pressure. CHAPTER 5 GASES Assigned Problems For Review 7. a. At constant temperature, the average kinetic energy of the He gas sample will equal the average kinetic energy of the Cl 2 gas sample. In order for the average kinetic energies to be the

More information

AP* Physics B: Newton s Laws YOU MAY USE YOUR CALCULATOR

AP* Physics B: Newton s Laws YOU MAY USE YOUR CALCULATOR AP* Physics B: Newton s Laws Name: Period: YOU MAY USE YOUR CALCULATOR CLEARLY SHOW THE METHOD YOU USED AND STEPS INVOLVED IN ARRIVING AT YOUR ANSWERS. It is to your advantage to do this, because you may

More information

Chapter 10 Practice. Name: Multiple Choice Identify the choice that best completes the statement or answers the question.

Chapter 10 Practice. Name: Multiple Choice Identify the choice that best completes the statement or answers the question. Name: Score: 0 / 18 points (0%) [3 open ended questions not graded] Chapter 10 Practice Multiple Choice Identify the choice that best completes the statement or answers the question. 1. A sample of gas

More information

AP CHEMISTRY 2007 SCORING GUIDELINES (Form B)

AP CHEMISTRY 2007 SCORING GUIDELINES (Form B) AP CHEMISTRY 2007 SCORING GUIDELINES (Form B) Question 1 A sample of solid U O 8 is placed in a rigid 1.500 L flask. Chlorine gas, Cl 2 (g), is added, and the flask is heated to 862 C. The equation for

More information

g of CO 2 gas is at a temperature of 45 o C and a pressure of 125 kpa. What is the volume of the container? 11 L

g of CO 2 gas is at a temperature of 45 o C and a pressure of 125 kpa. What is the volume of the container? 11 L Name period AP Chemistry Unit 5 answers 1. A fixed quantity of gas at 23⁰C exhibits a pressure of 748 torr and occupies a volume of 10.3 L. Calculate the volume the gas will occupy if the temperature is

More information

2005 AP CHEMISTRY FREE-RESPONSE QUESTIONS (Form B)

2005 AP CHEMISTRY FREE-RESPONSE QUESTIONS (Form B) 2005 AP CHEMISTRY FREE-RESPONSE QUESTIONS (Form B) 6. Consider two containers of volume 1.0 L at 298 K, as shown above. One container holds 0.10 mol N 2 (g) and the other holds 0.10 mol H 2 (g). The average

More information

Properties of Gases. Properties of Gases. Pressure. Three phases of matter. Definite shape and volume. solid. Definite volume, shape of container

Properties of Gases. Properties of Gases. Pressure. Three phases of matter. Definite shape and volume. solid. Definite volume, shape of container Properties of Gases Properties of Gases Three phases of matter solid Definite shape and volume liquid Definite volume, shape of container gas Shape and volume of container Properties of Gases A gas is

More information

B 2, C 2, N 2. O 2, F 2, Ne 2. Energy order of the p 2p and s 2p orbitals changes across the period.

B 2, C 2, N 2. O 2, F 2, Ne 2. Energy order of the p 2p and s 2p orbitals changes across the period. Chapter 11 Gases Energy order of the p p and s p orbitals changes across the period. Due to lower nuclear charge of B, C & N there is no s-p orbitals interaction Due to high nuclear charge of O, F& Ne

More information

A Gas Uniformly fills any container. Easily compressed. Mixes completely with any other gas. Exerts pressure on its surroundings.

A Gas Uniformly fills any container. Easily compressed. Mixes completely with any other gas. Exerts pressure on its surroundings. Chapter 5 Gases Chapter 5 A Gas Uniformly fills any container. Easily compressed. Mixes completely with any other gas. Exerts pressure on its surroundings. Copyright Cengage Learning. All rights reserved

More information

Chapter 5. Question. Question. Answer. Answer. Question (continued) The Gaseous State

Chapter 5. Question. Question. Answer. Answer. Question (continued) The Gaseous State Chapter 5 CRS s The Gaseous State Equal volumes of propane, C 3 H 8, and carbon monoxide at the same temperature and pressure have the same a. density. b.. c. number of atoms. 1) a only 2) b only 3) c

More information

AP CHEMISTRY 2009 SCORING GUIDELINES

AP CHEMISTRY 2009 SCORING GUIDELINES 2009 SCORING GUIDELINES Question 1 (10 points) Answer the following questions that relate to the chemistry of halogen oxoacids. (a) Use the information in the table below to answer part (a)(i). Acid HOCl

More information

Comparison of Solids, Liquids, and Gases

Comparison of Solids, Liquids, and Gases CHAPTER 8 GASES Comparison of Solids, Liquids, and Gases The density of gases is much less than that of solids or liquids. Densities (g/ml) Solid Liquid Gas H O 0.97 0.998 0.000588 CCl 4.70.59 0.00503

More information

CHEMISTRY 102A Spring 2012 Hour Exam II. 1. My answers for this Chemistry 102 exam should be graded with the answer sheet associated with:

CHEMISTRY 102A Spring 2012 Hour Exam II. 1. My answers for this Chemistry 102 exam should be graded with the answer sheet associated with: . My answers for this Chemistry 0 exam should be graded with the answer sheet associated with: a) Form A b) Form B c) Form C d) Form D e) Form E. A sample of LSD (D-lysergic acid diethylamide, C 4 H 30

More information

Preparation of the standard solution. Exp 5: Copyright Houghton Mifflin Company.All

Preparation of the standard solution. Exp 5: Copyright Houghton Mifflin Company.All Preparation of the standard solution Exp 5: Copyright Houghton Mifflin Company.All 1 1 Mass of KHP: 5.2 5.5 g Volume of volumetric flask: 250.0 cm Molarity of standard (KHP) solution: M = n/v Copyright

More information

Gases. A gas. Difference between gas and vapor: Why Study Gases?

Gases. A gas. Difference between gas and vapor: Why Study Gases? Gases Chapter 5 Gases A gas Uniformly fills any container. Is easily compressed. Mixes completely with any other gas. Exerts pressure on its surroundings. Difference between gas and vapor: A gas is a substance

More information

AP CHEMISTRY SCORING GUIDELINES

AP CHEMISTRY SCORING GUIDELINES Mean 5.64 out of 9 pts AP CHEMISTRY Question 1 CO(g) + 1 2 O 2 (g) CO 2 (g) 1. The combustion of carbon monoxide is represented by the equation above. (a) Determine the value of the standard enthalpy change,

More information

Name: Score: /100. Part I. Multiple choice. Write the letter of the correct answer for each problem. 3 points each

Name: Score: /100. Part I. Multiple choice. Write the letter of the correct answer for each problem. 3 points each Name: Score: /100 Part I. Multiple choice. Write the letter of the correct answer for each problem. 3 points each 1. Which of the following contains the greatest number of moles of O? A) 2.3 mol H 2 O

More information

The Gaseous State of Matter

The Gaseous State of Matter The Gaseous State of Matter Chapter 12 Hein and Arena Version 1.1 Dr. Eugene Passer Chemistry Department Bronx Community 1 College John Wiley and Company The Kinetic- Molecular Theory 2 The Kinetic-Molecular

More information

The Advanced Placement Examination in Chemistry. Part II - Free Response Questions & Answers 1970 to Equilibrium

The Advanced Placement Examination in Chemistry. Part II - Free Response Questions & Answers 1970 to Equilibrium The Advanced Placement Examination in Chemistry Part II - Free Response Questions & Answers 1970 to 005 Equilibrium Teachers may reproduce this publication, in whole or in part, in limited print quantities

More information

Chapter 5. The Gas Laws

Chapter 5. The Gas Laws Chapter 5 The Gas Laws 1 Pressure Force per unit area. Gas molecules fill container. Molecules move around and hit sides. Collisions are the force. Container has the area. Measured with a barometer. 2

More information

AP CHEMISTRY 2009 SCORING GUIDELINES

AP CHEMISTRY 2009 SCORING GUIDELINES 2009 SCORING GUIDELINES Question 2 (10 points) A student was assigned the task of determining the molar mass of an unknown gas. The student measured the mass of a sealed 843 ml rigid flask that contained

More information

c. K 2 CO 3 d. (NH 4 ) 2 SO 4 Answer c

c. K 2 CO 3 d. (NH 4 ) 2 SO 4 Answer c Chem 130 Name Exam 2, Ch 4-6 July 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 units and

More information

the drink won t rise very high in the straw vacuum straw 1 atm drink

the drink won t rise very high in the straw vacuum straw 1 atm drink vacuum the drink won t rise very high in the straw straw 1 atm drink vacuum the drink won t rise very high in the straw straw 1 atm drink vacuum the drink won t rise very high in the straw straw 0.007

More information

UNIT 10.

UNIT 10. UNIT 10 Pressure: F/A http://chemlab.truman.edu/chem130labs/calorimetryfiles/thermobackground.asp There are four variable needed to define the physical state of a gas. They are: o Temperature o Pressure

More information

AP* Electrostatics Free Response Questions

AP* Electrostatics Free Response Questions AP* Electrostatics Free Response Questions 1987 Q2 Object I, shown above, has a charge of +3 10 6 coulomb and a mass of 0.0025 kilogram. (a) What is the electric potential at point P, 0.30 meter from object

More information

Useful Information to be provided on the exam: 1 atm = 760 mm Hg = 760 torr = lb/in 2 = 101,325 Pa = kpa. q = m C T. w = -P V.

Useful Information to be provided on the exam: 1 atm = 760 mm Hg = 760 torr = lb/in 2 = 101,325 Pa = kpa. q = m C T. w = -P V. Chem 101A Study Questions, Chapters 5 & 6 Name: Review Tues 10/25/16 Due 10/27/16 (Exam 3 date) This is a homework assignment. Please show your work for full credit. If you do work on separate paper, attach

More information

Chapter Elements That Exist as Gases at 25 C, 1 atm. 5.2 Pressure basic physics. Gas Properties

Chapter Elements That Exist as Gases at 25 C, 1 atm. 5.2 Pressure basic physics. Gas Properties 5.1 Elements That Exist as Gases at 25 C, 1 atm Chapter 5 The Gaseous State YOU READ AND BE RESPONSIBLE FOR THIS SECTION! Gaseous compounds include CH 4, NO, NO 2, H 2 S, NH 3, HCl, etc. Gas Properties

More information

10/16/2018. Why study gases? An understanding of real world phenomena. An understanding of how science works.

10/16/2018. Why study gases? An understanding of real world phenomena. An understanding of how science works. 10/16/018 Kinetic Theory and the Behavior of Ideal & Real Gases Why study gases? An understanding of real world phenomena. An understanding of how science works. 1 10/16/018 A Gas Uniformly fills any container.

More information

Name: Score: /100. Part I. Multiple choice. Write the letter of the correct answer for each problem. 3 points each

Name: Score: /100. Part I. Multiple choice. Write the letter of the correct answer for each problem. 3 points each Name: Score: /100 Part I. Multiple choice. Write the letter of the correct answer for each problem. 3 points each 1. Which of the following contains the greatest number of moles of O? A) 2.3 mol H 2 O

More information

AP CHEMISTRY 2011 SCORING GUIDELINES

AP CHEMISTRY 2011 SCORING GUIDELINES AP CHEMISTRY 2011 SCORING GUIDELINES Question 6 In an experiment, all the air in a rigid 2.0 L flask is pumped out. Then some liquid ethanol is injected into the sealed flask, which is held at 35 C. The

More information

Chapter 10 Gases Characteristics of Gases Elements that exist as gases: Noble gases, O 2, N 2,H 2, F 2 and Cl 2. (For compounds see table 10.

Chapter 10 Gases Characteristics of Gases Elements that exist as gases: Noble gases, O 2, N 2,H 2, F 2 and Cl 2. (For compounds see table 10. Chapter 10 Gases 10.1 Characteristics of Gases Elements that exist as gases: Noble gases, O 2, N 2,H 2, F 2 and Cl 2. (For compounds see table 10.1) Unlike liquids and solids, gases expand to fill their

More information

Chem 1100 Pre-Test 3. Multiple Choice Identify the choice that best completes the statement or answers the question.

Chem 1100 Pre-Test 3. Multiple Choice Identify the choice that best completes the statement or answers the question. Chem 1100 Pre-Test 3 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. Determine the oxidation number of the underlined element in K 2CO 3. a. 1 b. 2 c.

More information

Gases. Which elements exist as gases at ordinary temperature and pressure? Gases: Have simple molecular formulas. Chapter 10 part 1: Ideal Gases

Gases. Which elements exist as gases at ordinary temperature and pressure? Gases: Have simple molecular formulas. Chapter 10 part 1: Ideal Gases Chapter 10 part 1: Ideal Gases Read: BLB 10.1 5 HW: BLB 10.2,19a,b, 23, 26, 30, 39, 41, 45, 49 Sup 10:1 6 Know: What is pressure? Gases Which elements exist as gases at ordinary temperature and pressure?

More information

Chemistry 11. Unit 11 Ideal Gas Law (Special Topic)

Chemistry 11. Unit 11 Ideal Gas Law (Special Topic) Chemistry 11 Unit 11 Ideal Gas Law (Special Topic) 2 1. States of substances It has been studied in Unit 3 that there exist 3 states of matter in nature: gas, liquid and solid. (Technically there is the

More information

Chapter 11 Review Packet

Chapter 11 Review Packet Chapter 11 Review Packet Name Multiple Choice Portion: 1. Which of the following terms is not a quantitative description of a solution? a. molarity b. molality c. mole fraction d. supersaturation 2. Which

More information

Mixture of gases. Mix 5 moles of CO 2 V = 40L 2 moles of N 2 T = 0 C 1 mole of Cl 2 What is P? Mary J. Bojan Chem 110

Mixture of gases. Mix 5 moles of CO 2 V = 40L 2 moles of N 2 T = 0 C 1 mole of Cl 2 What is P? Mary J. Bojan Chem 110 Mixture of gases Mix 5 moles of CO 2 V = 40L 2 moles of N 2 T = 0 C 1 mole of Cl 2 What is P? 1 Partial Pressure Partial pressure: the pressure a gas would have if it was the only gas in the container.

More information

KINETIC MOLECULAR DESCRIPTION OF THE STATES OF MATTER

KINETIC MOLECULAR DESCRIPTION OF THE STATES OF MATTER KINETIC MOLECULAR DESCRIPTION OF THE STATES OF MATTER CHAPTER 9 The Gaseous State CHAPTER 10 Solids, Liquids, and Phase Transitions CHAPTER 11 Solutions 392 Gas Liquid Solid 9 THE GASEOUS STATE 9.1 The

More information

Chemistry, The Central Science, 10th edition Theodore L. Brown; H. Eugene LeMay, Jr.; and Bruce E. Bursten. Chapter 10. Gases.

Chemistry, The Central Science, 10th edition Theodore L. Brown; H. Eugene LeMay, Jr.; and Bruce E. Bursten. Chapter 10. Gases. Chemistry, The Central Science, 10th edition Theodore L. Brown; H. Eugene LeMay, Jr.; and Bruce E. Bursten Chapter 10 Characteristics of Unlike liquids and solids, they Expand to fill their containers.

More information

This should serve a s a study guide as you go on to do the problems in Sapling and take the quizzes and exams.

This should serve a s a study guide as you go on to do the problems in Sapling and take the quizzes and exams. CHM 111 Chapter 9 Worksheet and Study Guide Purpose: This is a guide for your as you work through the chapter. The major topics are provided so that you can write notes on each topic and work the corresponding

More information

Chapter 5 Gases - 4 Gas Stoichiometry. Dr. Sapna Gupta

Chapter 5 Gases - 4 Gas Stoichiometry. Dr. Sapna Gupta Chapter 5 Gases - 4 Gas Stoichiometry Dr. Sapna Gupta Stoichiometry in Gases Amounts of gaseous reactants and products can be calculated by utilizing The ideal gas law to relate moles to T, P and V. Moles

More information

Gas Laws. Gas Properties. Gas Properties. Gas Properties Gases and the Kinetic Molecular Theory Pressure Gas Laws

Gas Laws. Gas Properties. Gas Properties. Gas Properties Gases and the Kinetic Molecular Theory Pressure Gas Laws Gas Laws Gas Properties Gases and the Kinetic Molecular Theory Pressure Gas Laws Gas Properties 1) Gases have mass - the density of the gas is very low in comparison to solids and liquids, which make it

More information

10/15/2015. Why study gases? An understanding of real world phenomena. An understanding of how science works.

10/15/2015. Why study gases? An understanding of real world phenomena. An understanding of how science works. 0/5/05 Kinetic Theory and the Behavior of Ideal & Real Gases Why study gases? An understanding of real world phenomena. An understanding of how science works. 0/5/05 A Gas fills any container. completely

More information

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. AP Chemistry: Practice Test, Ch. 5. - Gases Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) According to kinetic-molecular theory, in which

More information

Example Problems: 1.) What is the partial pressure of: Total moles = 13.2 moles 5.0 mol A 7.0 mol B 1.2 mol C Total Pressure = 3.

Example Problems: 1.) What is the partial pressure of: Total moles = 13.2 moles 5.0 mol A 7.0 mol B 1.2 mol C Total Pressure = 3. 5.6 Dalton s Law of Partial Pressures Dalton s Law of Partial Pressure; The total pressure of a gas is the sum of all its parts. P total = P 1 + P + P 3 + P n Pressures are directly related to moles: n

More information

CHE 105 Exam 2 Spring 2017

CHE 105 Exam 2 Spring 2017 CHE 105 Exam 2 Spring 2017 Your Name: Your ID: Question #: 1 What is the chemical formula of chromium(iii) bromide? A. CrBr B. CrBr2 C. Cr2Br D. Cr3Br E. CrBr3 F. Cr2Br3 Question #: 2 What is the correct

More information

CHAPTER 14: The Behavior of Gases

CHAPTER 14: The Behavior of Gases Name: CHAPTER 14: The Behavior of Gases Period: RELATIONSHIPS BETWEEN PRESSURE, VOLUME & TEMPERATURE OF A GAS Boyle s Law-Pressure and Volume Volume (ml) Pressure ( ) 60 50 40 30 20 10 Practice problem:

More information

Chem 1100 Pre-Test 3. Multiple Choice Identify the choice that best completes the statement or answers the question.

Chem 1100 Pre-Test 3. Multiple Choice Identify the choice that best completes the statement or answers the question. Chem 1100 Pre-Test 3 Multiple Choice Identify the choice that best completes the statement or answers the question. 1. An open-tube manometer is used to measure the pressure in a flask. The atmospheric

More information

Sectional Solutions Key

Sectional Solutions Key Sectional Solutions Key 1. For the equilibrium: 2SO 2 (g) + O 2 (g) 2SO 3 (g) + 188 kj, the number of moles of sulfur trioxide will increase if: a. the temperature of the system is increased (at constant

More information

AP* Magnetism Free Response Questions

AP* Magnetism Free Response Questions AP* Magnetism Free Response Questions 1978 Q4 ELECTROMAGNETISM 4. Two parallel conducting rails, separated by a distance L of 2 meters, are connected through a resistance R of 3 ohms as shown above. A

More information

Gases. Chapter 5. Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display.

Gases. Chapter 5. Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. Gases Chapter 5 Copyright The McGraw-Hill Companies, Inc. Permission required for reproduction or display. 1 Elements that exist as gases at 25 0 C and 1 atmosphere 2 3 Physical Characteristics of Gases

More information

AP* Solution Chemistry Free Response Questions page 1

AP* Solution Chemistry Free Response Questions page 1 AP* Solution Chemistry Free Response Questions page 1 1971 Molarity and molality are two ways of expressing concentration. (a) Clearly distinguish between them (b) Indicate an experimental situation where

More information

Slide 1 / A gas at a pressure of 10.0 Pa exerts a force of N on an area of 5.5 m 2 A 55 B 0.55 C 5.5 D 1.8 E 18

Slide 1 / A gas at a pressure of 10.0 Pa exerts a force of N on an area of 5.5 m 2 A 55 B 0.55 C 5.5 D 1.8 E 18 Slide 1 / 76 1 A gas at a pressure of 10.0 Pa exerts a force of N on an area of 5.5 m 2 A 55 B 0.55 C 5.5 D 1.8 E 18 Slide 2 / 76 2 A pressure of 1.00 atm is the same as a pressure of of mm Hg. A 193 B

More information

Chapter 7. Gases, liquids, and solids. Water coexisting in three states H 2 O (g) in air H 2 O (l) ocean H 2 O (s) iceberg

Chapter 7. Gases, liquids, and solids. Water coexisting in three states H 2 O (g) in air H 2 O (l) ocean H 2 O (s) iceberg Chapter 7 Gases, liquids, and solids Water coexisting in three states H 2 O (g) in air H 2 O (l) ocean H 2 O (s) iceberg What s crack a lackin? Kinetic-molecular theory of gases Physical states and the

More information

Chapter 5 The Gaseous State

Chapter 5 The Gaseous State Chapter 5 The Gaseous State Contents and Concepts Gas Laws We will investigate the quantitative relationships that describe the behavior of gases. 1. Gas Pressure and Its Measurement 2. Empirical Gas Laws

More information

4. 1 mole = 22.4 L at STP mole/volume interconversions at STP

4. 1 mole = 22.4 L at STP mole/volume interconversions at STP Ch. 10 Gases and the Ideal Gas Law(s) Chem 210 Jasperse Ch. 10 Handouts 1 10.1 The Atmosphere 1. Earth surrounded by gas 2. Major components: Nitrogen 78% Oxygen 21% Miscellaneous: All

More information

CHEMISTRY WKST: Gases Review p. 1

CHEMISTRY WKST: Gases Review p. 1 CHEMISTRY WKST: Gases Review p. 1 1) a) b) c) V directly proportional to Kelvin temperature V inversely proportional to pressure V directly proportional to moles 2) Air pressure is caused by the collisions

More information

Chapter 6 The States of Matter. Examples of Physical Properties of Three States of Matter

Chapter 6 The States of Matter. Examples of Physical Properties of Three States of Matter Chapter 6 The States of Matter Examples of Physical Properties of Three States of Matter 1 Three States of Matter Solids: Fixed shape, fixed volume, particles are held rigidly in place. Liquids: Variable

More information

CHEM 101 WINTER MAKEUP EXAM

CHEM 101 WINTER MAKEUP EXAM CHEM 101 WINTER 09-10 MAKEUP EXAM On the answer sheet (Scantron) write you name, student ID number, and recitation section number. Choose the best (most correct) answer for each question and enter it on

More information

Gases: Their Properties & Behavior. Chapter 09 Slide 1

Gases: Their Properties & Behavior. Chapter 09 Slide 1 9 Gases: Their Properties & Behavior Chapter 09 Slide 1 Gas Pressure 01 Chapter 09 Slide 2 Gas Pressure 02 Units of pressure: atmosphere (atm) Pa (N/m 2, 101,325 Pa = 1 atm) Torr (760 Torr = 1 atm) bar

More information

3. Which of the following compounds is soluble? The solubility rules are listed on page 8.

3. Which of the following compounds is soluble? The solubility rules are listed on page 8. 1. Classify the following reaction. Sb 2 O 3 + 3 Fe 2 Sb + 3 FeO a) Combination reaction b) Decomposition reaction c) Neutralization reaction d) Single-replacement reaction e) Double-replacement reaction

More information

CHEM 150 Exam 2. Name Multiple Choice Identify the letter of the choice that best completes the statement or answers the question.

CHEM 150 Exam 2. Name Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. CHEM 150 Exam 2 Name Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. _A D 1. Formic acid, HCOOH, is what causes the sting of bee stings. What

More information

AP Chemistry Ch 5 Gases

AP Chemistry Ch 5 Gases AP Chemistry Ch 5 Gases Barometer - invented by Evangelista Torricelli in 1643; uses the height of a column of mercury to measure gas pressure (especially atmospheric) Manometer- a device for measuring

More information

MARK SCHEME for the October/November 2015 series 9701 CHEMISTRY

MARK SCHEME for the October/November 2015 series 9701 CHEMISTRY CAMBRIDGE INTERNATIONAL EXAMINATIONS Cambridge International Advanced Subsidiary and Advanced Level MARK SCHEME for the October/November 2015 series 9701 CHEMISTRY 9701/21 Paper 2 (AS Structured Questions),

More information

CHEM 101A EXAM 1 SOLUTIONS TO VERSION 1

CHEM 101A EXAM 1 SOLUTIONS TO VERSION 1 CHEM 101A EXAM 1 SOLUTIONS TO VERSION 1 Multiple-choice questions (3 points each): Write the letter of the best answer on the line beside the question. Give only one answer for each question. B 1) If 0.1

More information

Gases and IMFs Unit Exam Review Guide

Gases and IMFs Unit Exam Review Guide Gases and IMFs Unit Exam Review Guide The following review guide does not necessarily contain all topics that will appear on the test. Make sure to review all notes and concepts from this unit. This review

More information

Exam 1, Ch October 12, Points

Exam 1, Ch October 12, Points Chem 130 Name Exam 1, Ch 46.7 October 12, 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 units

More information

TOPIC 2. Topic 2. States of Matter (I) - Gases. 1

TOPIC 2. Topic 2. States of Matter (I) - Gases. 1 Chemistry TOPIC 2 States of Matter (I) - Gases Topic 2. States of Matter (I) - Gases. 1 Contents 1. Introduction 2. Pressure measurement 3. The Ideal Gas equation 4. Efusion and Diffusion 5. Kinetic Molecular

More information

Chapter 5 Gases and the Kinetic-Molecular Theory

Chapter 5 Gases and the Kinetic-Molecular Theory Chapter 5 Gases and the Kinetic-Molecular Theory Name (Formula) Methane (CH 4 ) Ammonia (NH 3 ) Chlorine (Cl 2 ) Oxygen (O 2 ) Ethylene (C 2 H 4 ) Origin and Use natural deposits; domestic fuel from N

More information

CHEM 101 WINTER MAKEUP EXAM

CHEM 101 WINTER MAKEUP EXAM CHEM 101 WINTER 09-10 MAKEUP EXAM On the answer sheet (Scantron) write you name, student ID number, and recitation section number. Choose the best (most correct) answer for each question and enter it on

More information

Real Gases 1. The value of compressibility factor for one mole of a gas under critical states is 1) 3/8 2) 2/3 3) 8/27 4) 27/8 2. an der Waal s equation for one mole of CO2 gas at low pressure will be

More information

molality: m = = 1.70 m

molality: m = = 1.70 m C h e m i s t r y 1 2 U n i t 3 R e v i e w P a g e 1 Chem 12: Chapters 10, 11, 12, 13, 14 Unit 3 Worksheet 1. What is miscible? Immiscible? Miscible: two or more substances blend together for form a solution

More information

Why study gases? A Gas 10/17/2017. An understanding of real world phenomena. An understanding of how science works.

Why study gases? A Gas 10/17/2017. An understanding of real world phenomena. An understanding of how science works. Kinetic Theory and the Behavior of Ideal & Real Gases Why study gases? n understanding of real world phenomena. n understanding of how science works. Gas Uniformly fills any container. Mixes completely

More information

Pressure. Pressure Units. Molecular Speed and Energy. Molecular Speed and Energy

Pressure. Pressure Units. Molecular Speed and Energy. Molecular Speed and Energy Pressure is defined as force per unit area. Pressure Pressure is measured with a device called a barometer. A mercury barometer uses the weight of a column of Hg to determine the pressure of gas pushing

More information

kpa = 760 mm Hg? mm Hg P = kpa

kpa = 760 mm Hg? mm Hg P = kpa Chapter : Gasses. The atmospheric pressure of 768. mm Hg. Expressed in kilopascals (kpa) what would the value be the pressure? ( atm = 035 Pa = 760 torr = 760 mm Hg) a. 778.4 kpa b. 0.4 kpa c. 00.3 kpa

More information

H = DATA THAT YOU MAY USE. Units Conventional Volume ml or cm 3 = cm 3 or 10-3 dm 3 Liter (L) = dm 3 Pressure atm = 760 torr = 1.

H = DATA THAT YOU MAY USE. Units Conventional Volume ml or cm 3 = cm 3 or 10-3 dm 3 Liter (L) = dm 3 Pressure atm = 760 torr = 1. DATA THAT YOU MAY USE Units Conventional S.I. Volume ml or cm 3 = cm 3 or 10-3 dm 3 Liter (L) = dm 3 Pressure atm = 760 torr = 1.013 10 5 Pa torr = 133.3 Pa Temperature C 0 C = 73.15 K PV L-atm = 1.013

More information

1. Balance the following chemical equations: a. C 8 H 18 + O 2 à CO 2 + H 2 O. b. B 5 H 9 + O 2 à B 2 O 3 + H 2 O. c. S 8 + Cl 2 à S 2 Cl 2

1. Balance the following chemical equations: a. C 8 H 18 + O 2 à CO 2 + H 2 O. b. B 5 H 9 + O 2 à B 2 O 3 + H 2 O. c. S 8 + Cl 2 à S 2 Cl 2 EXAM 2 PRACTICE QUESTIONS NOTE- THIS IS ONLY A SELECTION OF POSSIBLE TYPES OF QUESTIONS: REFER TO THE EXAM 2 REVIEW GUIDELINES FOR THE LIST OF LEARNING TARGETS. There will likely be other questions on

More information

Gas Density. Standard T & P (STP) 10/29/2011. At STP, 1 mol of any ideal gas occupies 22.4 L. T = 273 K (0 o C) P = 1 atm = kpa = 1.

Gas Density. Standard T & P (STP) 10/29/2011. At STP, 1 mol of any ideal gas occupies 22.4 L. T = 273 K (0 o C) P = 1 atm = kpa = 1. Standard T & P (STP) T = 73 K (0 o C) P = 1 atm = 101.35 kpa = 1.0135 bar At STP, 1 mol of any ideal gas occupies.4 L.4 L Gas Density We can use PV = nrt to determine the density of gases. What are the

More information

Chapter 10. Chapter 10 Gases

Chapter 10. Chapter 10 Gases Chapter 10 Gases Earth is surrounded by a layer of gaseous molecules - the atmosphere - extending out to about 50 km. 10.1 Characteristics of Gases Gases low density; compressible volume and shape of container

More information

Georgia Institute of Technology. CHEM 1310: Exam II. October 21, 2009

Georgia Institute of Technology. CHEM 1310: Exam II. October 21, 2009 Georgia Institute of Technology CHEM 1310: Exam II October 21, 2009 Select the best answer for each of the following problems. Each problem is worth 5 points with no partial credit. 1. A solution is prepared

More information

Chem 12: Chapters 10, 11, 12, 13, 14 Unit 3 Worksheet

Chem 12: Chapters 10, 11, 12, 13, 14 Unit 3 Worksheet C h e m i s t r y 1 2 U n i t 3 R e v i e w P a g e 1 Chem 12: Chapters 10, 11, 12, 13, 14 Unit 3 Worksheet 1. What is miscible? Immiscible? 2. What is saturated? Unsaturated? Supersaturated? 3. How does

More information

M = Molarity = mol solute L solution. PV = nrt % yield = actual yield x 100 theoretical yield. PM=dRT where d=density, M=molar mass

M = Molarity = mol solute L solution. PV = nrt % yield = actual yield x 100 theoretical yield. PM=dRT where d=density, M=molar mass Solubility Rules: 1. Most nitrate salts are soluble. 2. Most salts of alkali metals and ammonium cations are soluble. 3. Most chloride, bromide and iodide salts are soluble. Exceptions: salts containing

More information

1 Points to Remember Subject: Chemistry Class: XI Chapter: States of matter Top concepts 1. Intermolecular forces are the forces of attraction and repulsion between interacting particles (atoms and molecules).

More information

Forces between atoms/molecules

Forces between atoms/molecules Professor K gases Forces between atoms/molecules BONDS are the INTRAMOLECULAR FORCES holding the atoms in molecules together... What holds the molecules of a solid or liquid together?... INTERMOLECULAR

More information

10. 2 P R O B L E M S L I Q U I D S A N D G A S E S

10. 2 P R O B L E M S L I Q U I D S A N D G A S E S South Pasadena AP Chemistry Name 10 States of Matter Period Date 10. 2 P R B L E M S L I Q U I D S A N D G A S E S 1. Use the following table to answer these questions. Vapor Pressures of Various Liquids

More information

Georgia Institute of Technology. CHEM 1310: Exam II. October 21, 2009

Georgia Institute of Technology. CHEM 1310: Exam II. October 21, 2009 Georgia Institute of Technology CHEM 1310: Exam II October 21, 2009 Select the best answer for each of the following problems. Each problem is worth 5 points with no partial credit. 1. Place the following

More information

Illinois JETS Academic Challenge Chemistry Test (District) Useful Information. PV = nrt R = L atm mol -1 K -1.

Illinois JETS Academic Challenge Chemistry Test (District) Useful Information. PV = nrt R = L atm mol -1 K -1. Useful Information PV = nrt R = 0.08206 L atm mol -1 K -1 Q = m x T x s 1 atm = 760 torr Avogadro's number = 6.022 x 10 23 K = C + 273 ph = -log [H + ] 1 1 E = (-R H ) - n 2 n 2 f i R H = 2.18 x 10-18

More information

Gases and Kinetic Molecular Theory

Gases and Kinetic Molecular Theory 1 Gases and Kinetic Molecular Theory 1 CHAPTER GOALS 1. Comparison of Solids, Liquids, and Gases. Composition of the Atmosphere and Some Common Properties of Gases 3. Pressure 4. Boyle s Law: The Volume-Pressure

More information

CHEM 116 Phase Changes and Phase Diagrams

CHEM 116 Phase Changes and Phase Diagrams CHEM 116 Phase Changes and Phase Diagrams Lecture 4 Prof. Sevian Please turn in extra credit assignments at the very beginning of class. Today s agenda Finish chapter 10 Partial pressures Vapor pressure

More information

Gases. Gases and the Kinetic Molecular Theory. Chapter 5. Gases have different physical properties compared to liquids and solids. width.

Gases. Gases and the Kinetic Molecular Theory. Chapter 5. Gases have different physical properties compared to liquids and solids. width. Gases Chapter 5 Gases and the Kinetic Molecular Theory 5.1 An Overview of the hysical States of Matter 5.2 Gas ressure and Its Measurement 5.3 The Gas Laws and Their Experimental Foundations 5.4 Further

More information