CHEMISTRY GENERAL CHEMISTRY II SPRING 2017

Size: px

Start display at page:

Download "CHEMISTRY GENERAL CHEMISTRY II SPRING 2017"

Jean Neal
5 years ago
Views:

1 CHEMISTRY GENERAL CHEMISTRY II SPRING 2017 Day & Time: Tuesday & Thursday: 2:00 pm 5:00 pm Location: Spring Branch, room 517 & 519 Class number: Instructor Yokabet Gedeon, M.S., Ph.D. Yokabet.Gedeon@hccs.edu Learning Web: Textbooks Lecture: Brown, T.L, LeMay, Jr., H.E., Bursten, B.E., Murphy, C.J., Woodward, P.M, and Stoltzfus, M.W. Chemistry: The Central Science, 13 th Edition. Pearson Education, Inc., ISBN-13: Laboratory: Pahlavan, Gholam H., Bai, Yiyan, and Askew, William. CHEM 1412: Laboratory Manual for General Chemistry II. Houston Community College and Bluedoor, ISBN-13: Course Description General Chemistry II (Chemistry 1412) is a core curriculum course. It is a continuation of General Chemistry I (Chemistry 1411). It is designed to impart a basic knowledge of physical science to students. It is a prerequisite to Chemistry 2423 (Organic Chemistry I) and Chemistry 2425 (Organic Chemistry II). The credit for this course is 4 semester hours. Course Objectives This course is a continuation of General Chemistry I (Chemistry 1411). Topics include solutions, chemical kinetics, equilibrium and equilibrium phenomena in aqueous solutions, acids and bases, ph, thermodynamics, electrochemistry, nuclear chemistry, organic chemistry, and biochemistry. Successful completion of this course will help students understand basic chemical principles and provide a foundation for advanced chemistry and related sciences. It satisfies the following core requirements: critical thinking, communication skills, empirical and quantitative skills, teamwork and social/personal responsibility. Prerequisites Students should have the following prerequisites

2 General Chemistry I (Chemistry 1411). College algebra (Math 1314) College-level reading, writing and math skills (TSI requirements should be completed) Note: As stated in the HCCS catalog, lack of satisfactory completion of the course prerequisites is one of the main reasons that cause students to do poorly in chemistry. Therefore, students must complete the prerequisites satisfactorily before enrolling in Chemistry Attendance Regular attendance is required. Students are expected to attend the entire class, i.e. lecture and laboratory portions, regularly. Class attendance is checked every session. It is the responsibility of each student to amend his or her professional/personal schedule to meet the class schedule. If the student is going to be absent for any reason, he or she should arrange to get the notes and information from a fellow classmate. Students are responsible for completing assignments scheduled during their absences. As stated in the Student Handbook, a student may be dropped from the course if the student s accumulated absences are in excess of 12.5% of the hours of instruction. Therefore if a student is absent more than three times, he/she can be dropped from the class. The instructor has the full authority to drop a student for excessive absences; however, it is the responsibility of the student to drop a course. If a student just stops coming to the class and does not drop the course, he/she will get an FX in the class. Tardiness: Students are expected to be on time for each session. If a student is frequently late for the class, he or she may be marked absent for the many sessions he or she has been late. Tardiness will be marked in the attendance record. inquiry: Questions via will be answered within 48 to 72 hours or in the next class meeting. HCC Course Withdrawal Policy The State of Texas imposes penalties on students who drop courses excessively. Students who repeat a course three or more times face significant tuition/fee increases at HCC and other Texas public colleges and universities. In 2007, the Texas Legislature passed Senate Bill 1231, a law limiting students to no more than six total course withdrawals throughout their academic career in obtaining a baccalaureate degree.

3 Last Day for Administrative/Student Withdrawals: The last day for student withdrawal is April 3 at 4:30 pm. Students must visit with a faculty advisor, a counselor or Online Student Services prior to withdrawing. Students are encouraged to ask their counselors/hcc Online Student Services about opportunities for assistance - tutoring, childcare, financial aid, job placement, etc. International Students: Receiving a W in a course may affect the status of a student visa. Once a W is given for the course, it will not be changed to an F because of visa consideration. International students should contact the International Student Office at if they have any questions about their visa status and other transfer issues. Disability Support Services The Houston Community College System is in compliance with the Americans with Disabilities Act (ADA) and the Rehabilitation Act of 1973 (section 504). If any student has any disabilities or special needs that may affect his/her success in this course, the student needs to contact the Office of Disability Support Services in the college. The counselor will determine the reasonable accommodation or modification, upon reviewing the student s documents. The instructor is authorized to provide only the accommodations requested by the Disability Support Services Office. For more information, students may contact Dr. LaRonda Ashford at or Ms. Lisa Parkinson at Sex/Gender Anti-discrimination Rights The Houston Community College System is in compliance with Title IX of the Education Amendments of 1972 ( Title IX ), a Federal civil rights law that prohibits discrimination on the basis of sex, including pregnancy and parental status, in educational programs and activities; it has policies and procedures that protect students rights with regard to sex/gender discrimination. Information regarding these rights are on the HCC website under Students-Anti-discrimination. It is important that every student understands and conforms to respectful behavior while at HCC. Sexual misconduct is not condoned and will be addressed promptly. It is important that each student knows his/her rights by logging in to Moreover, students who are pregnant and require accommodations should contact any of the ADA Counselors for assistance. Course Grading Policy Lecture Grade There will be three (3) regular lecture exams, three (3) bonus quizzes and one (1) final lecture exam. The exams will be over the materials covered in class. Students have one hour and half to complete each lecture exam and ten to fifteen minutes to complete each bonus quiz. The final exam is comprehensive and

4 departmental. Students have two hours to complete the final exam. There will be no breaks during any of the exams or quizzes and, if any student leaves the room for any reason, that student should turn in his/her exam/quiz. The student will not be allowed to continue taking that exam. Each homework assignment will count as one (1) added bonus point toward the final exam grade. Laboratory Grade There will be laboratory experiments, reports and assignments. Students need to submit a lab report for every experiment performed in the lab the following lab period. Late lab reports and assignments will be penalized and/or will not be accepted. Each experiment will be graded based on (1). Lab attendance and performance, (2). In-Lab report, and (3). Pre- and Post-lab review exercises. Students are expected to comply with all the laboratory rules and safety instructions. Safety glasses or goggles must be worn at all times during the laboratory experiment period. Any student not wearing glasses or goggles after the experiment has begun may be given a zero for that experiment! Make-up Policy There will be no make-up for any lecture examination/laboratory experiment. Failure to take a lecture exam or perform a lab experiment will result in a zero (0) for the missed exam/experiment. It is mandatory to take the final exam, and no student can be exempted. A student who completes the course by taking the final exam cannot receive a W in the course. Grade determination There will be three (3) lecture exams worth 100 points each. There will be three (3) quizzes worth 10 or more added bonus points each. The lab experiments, reports and assignments are worth 150 points (25%). The final exam will be worth 120 points (20%). If the final exam grade is greater than the lowest lecture exam grade, the final exam grade will replace the lowest exam grade in computing the overall grade. Total points to be earned in this class = 600 points Points earned by the student The overall score = x 100 Total points The overall score is based on the following: Three lecture exams 55% Laboratory 25% Final exam 20% The course grade is then obtained from the overall score: A = %

5 B = % C = % D = % F = 0-59 % Academic Honesty Students are expected to comply with policies stated in the Houston Community College System Student Handbook concerning academic honesty. Disciplinary proceedings and penalties may be initiated by the college system against a student accused of scholastic dishonesty. Scholastic dishonesty includes, but is not limited to, cheating on a test, plagiarism, and collusion. Penalties can include failure in the course, academic probation, or even expulsion from Houston Community College. Classroom Policy Cell phones and/or Electronic devices The use of cell phones and/or other electronic devices during class lecture or exam administration is not allowed. All cellular phones brought to class must either be muted or off during lecture and laboratory sessions. Breaks Eating, drinking, side talking, sleeping and joking are not permitted during the lecture. There will be a 15-minute break during each session or a 5-minute break every hour. Tutorial Services Free tutoring is available to HCC students: Find-a-Tutor A searchable database that allows students to find current information about all on-campus tutoring in every discipline. Students can search the Find-a-Tutor database by college, subject, or both to find out what is offered, where, what time, whether it is walk-in or requires an appointment, and any other relevant information Online Tutoring Students can access online tutors 24/7/365, upload questions and/or papers and get a response to download within 24 hours. A video located on the bottom of the Upswing log-in page hccs.upswing.io - explains how the system works. Students need to use their Active Directory student ID number and password. Evaluation for Greater Learning Student Survey System (EGLS3) At Houston Community College, professors believe that thoughtful student feedback is necessary to improve teaching and learning. During a designated time, students will be asked to answer a short online survey of research-based questions related to instruction. The anonymous results of the survey will be made available to professors and division chairs for continual improvement of instruction.

6 Course Schedule The following is a tentative class schedule for the lecture and laboratory sessions and exam dates. Week Lecture Laboratory Examination Schedule 1/15 Chap. 11: Introduction/Rules and Regulations/ Properties of Solutions Lab Safety Rules and Regulations/ Lab Safety Video 1/22 Chap. 11: Properties of Solutions Experiment 1: Solubility and Metathesis Reactions in Aqueous Solution 1/29 Chap. 12: Chemical Kinetics Experiment 2: Molecular Weight Determination by Freezing Point Depression 2/5 Chap. 12: Chemical Kinetics Chap. 13: Chemical Equilibrium Quiz #1 2/12 Chap. 13: Chemical Equilibrium Exam #1 2/19 Chap. 14: Acids and Bases Experiment 3: Boiling-Point Elevation of a Solution 2/26 Chap. 14: Acids and Bases Chap. 15: Acid-Base Equilibria Experiment 4: Kinetics of a Chemical Reaction: The Iodine Clock Reaction 3/5 Chap. 15: Acid-Base Equilibria Chap. 16: Solubility and Complex Ion Equilibria 3/12 Spring Break Quiz #2 3/19 Chap. 16: Solubility and Complex Ion Equilibria 3/26 Chap. 17: Spontaneity, Entropy, and Free Energy 4/2 Chap. 17: Spontaneity, Entropy, and Free Energy Chap. 18: Electrochemistry Experiment 5: Hydrolysis Reactions of Anions and Cations of Salts Experiment 6: Acid-Base Titration: Determination of the Purity of Potassium Hydrogen Phthalate Exam #2 4/3 Last Day for Student Withdrawals 4:30 p.m.

7 4/9 Chap. 18: Electrochemistry Chap. 19: The Nucleus: A Chemist s View 4/16 Chap. 19: The Nucleus: A Chemist s View Chap. 22: Organic and Biological 4/23 Chap. 22: Organic and Biological Experiment 7: Determination of the Dissociation Constant Ka, of a Weak Acid Experiment 9: Qualitative Analysis of Cations Experiment 15: Structural Formulas and Isomerism Quiz # 3 4/30 Review Experiment 17: Synthesis of Aspirin (acetylsalicylic acid) Exam #3 5/7 Final Exam Disclaimer: Please note that this is a tentative schedule. The instructor reserves the right to change anything in the syllabus at any time as deemed necessary and appropriate.

8 CHEMISTRY 1412 General Chemistry II Academic Discipline Program Learning Outcomes 1. To provide the student a basic and practical understanding of chemistry (formulas, reactions, and calculations) and recognize its relevance in our daily lives. 2. To prepare our students to meet with success in higher level chemistry and other science courses when they transfer to four-year universities. 3. To prepare our students for professional programs requiring a mastery of General Chemistry and Organic Chemistry, such as Nursing, Medicine, Dentistry, and Pharmacy. 4. To enhance class lectures with a meaningful, hands-on laboratory experience involving making measurements, observing reactions, evaluating the results, and drawing conclusions with the involvement of lab group or other class members. Course Student Learning Outcomes (SLOs) and Learning Objectives (Numbering system linked to SLO) SLO 1. Distinguish between the different ways of measuring concentrations of solutions, and relate concentration to the colligative properties of solutions Relate the concentration of solutions to their colligative properties Determine if two compounds will mix to form a solution or not based on their structures Given the mass of a solute and the volume of a solution or the mass of the solvent, calculate the relevant concentration (molarity, molality, percent concentration, mole fraction, or ppm). Convert a given concentration from one concentration unit to another Determine the molecular weight of an unknown solute, given the value of a colligative property. SLO 2. Determine and analyze the rates of chemical reactions Determine the average rate and instantaneous rate of a reaction from concentrationtime data Determine the order of a reaction with respect to each reactant and write the rate law for the reaction. Determine the value of the rate constant, k Write the integrated rate law of first and second order reactions and use the rate law to relate concentration of the reactant with reaction time, rate constant, and half-life Given different initial reactant concentrations and the respective initial rate of the reaction, determine the value of the exponents in the rate law and the value of the rate constant Relate the effect of temperature and activation energy to reaction rate using the Arrhenius equation Relate the rate law to the mechanism of the reaction and to the molecularity of the elementary reactions comprising the mechanism.

9 SLO 3. Write equilibrium constant expressions for chemical reactions and calculate the value of the equilibrium constant and the concentration of reactants and products at equilibrium Write the equilibrium constant expression for homogeneous and heterogeneous reactions Given one or more concentrations at equilibrium, calculate the value of the equilibrium constant for the reaction and/or the equilibrium concentrations of the other substances in the reaction Given one or more initial concentrations, calculate the concentrations of the reactants and products at equilibrium and/or the value of the equilibrium constant, using the "ICE" table method From the value of the reaction quotient, Q, determine whether a reaction is at equilibrium, and if not, which direction the reaction will initially proceed in order to reach equilibrium Apply LeChâtelier s Principle to determine the effects of changes in concentrations, temperature on compositions of equilibrium mixtures. SLO 4. Demonstrate proficiency in acid-base and solubility product calculations Know the three different definitions and principles of acids and bases (Arrhenius, Bronsted-Lowry, and Lewis) Calculate [H + ], [OH - ], ph, and poh Use dissociation constants for weak monoprotic acids and bases to determine the ph of their aqueous solutions Differentiate between acidic, basic and neutral salts and determine the ph of aqueous solutions of salts Understand the common ion effect and its relevance to buffers; determine the ph of buffered solutions using the Henderson-Hasselbalch equation Calculate the ph at various stages of titration curves for (i) strong a cids & strong bases, (ii) weak acids & strong bases, (iii) strong acids & weak bases Write solubility product expressions and interconvert between the solubility constant, Ksp and concentrations of dissolved ions in saturated solutions of slightly soluble salts Given Ksp, determine whether precipitation will occur when two aqueous solutions of salts are mixed that react to form a sparingly soluble salt. SLO 5. Express the three laws of thermodynamics and interrelate the enthalpy, free energy and equilibrium constant for the reaction Express the concept of entropy and predict the sign of the entropy change for a given reaction Calculate the entropy change of a reaction using Hess's law or standard entropies From the Gibbs equation, relate and calculate the values of the entropy, enthalpy, free energy, and temperature of a reaction Relate and calculate the value of the equilibrium constant to the entropy, enthalpy, free energy and temperature of the reaction.

10 SLO 6. Based on the principles of oxidation and reduction, balance oxidationreduction reactions, calculate cell potentials of voltaic cells based on oxidation-reduction reactions, and make quantitative calculations based on electrolysis Determine the oxidation state of elements in compounds Based on changes in oxidation states, determine which substance in a reaction is oxidized and which is reduced Balance oxidation-reduction reactions in acidic and basic solution using the method of half-reactions Sketch voltaic and electrolytic cells, identifying the anode, cathode, anode compartment, cathode compartment, salt bridge, and direction of electron flow Calculate standard cell potentials from standard reduction potentials Rank reducing agents and oxidizing agents based on standard reduction potentials Determine non-standard cell potentials from standard cell potentials using the Nernst equation Interconvert between time, current, and masses of reactants and products in electrolysis processes. SLO 7. Identify modes of radioactive decay, balance nuclear reactions, calculate energy changes associated with nuclear reactions, and relate quantities of radioactive elements with time based on the kinetics of nuclear processes Identify common modes of radioactive decay Write balanced nuclear reactions Differentiate between the different modes of decay and predict the likely mode of decay Interconvert between rates of nuclear decay, half-lives of radioactive nuclei, and amounts of radioactive nuclei Determine energy changes of nuclear reactions and stability of nuclei using Einstein s equation Distinguish between subcritical, critical, and supercritical masses; contrast nuclear fission with nuclear fusion processes Identify the major components and principle of operation of nuclear reactors. SLO 8. Classify, name, and draw the structure of basic organic compounds; student can write chemical reactions of alkanes, alkenes, and alkynes Given the structure, name alkanes using the IUPAC rules of nomenclature, and viceversa Classify organic compounds based on the functional group present in their structures Given the structure, name alkenes and alkynes using the IUPAC rules of nomenclature, and vice-versa. Optional if time permits. Write combustion and halogenation reactions of alkanes; write addition reactions of alkenes and alkynes

11 Laboratory Policy 1. Laboratory Safety Video On the first day of lab, a safety video will be shown (about 35 min long). Each student will then sign a statement affirming his or her commitment to following safe procedures in the laboratory. 2. Laboratory Safety Quiz Each student will take a laboratory safety quiz. Students are expected to comply with all the laboratory rules and safety instructions. 3. Laboratory Safety Gear Eye protection: Each student should have adequate eye protection in the laboratory. Safety glasses or goggles must be worn at all times during the laboratory experiment period. Any student not wearing glasses or goggles after the experiment has begun may be given a zero for that experiment! Body protection: Each student should have adequate body protection in the laboratory. Lab coats or lab aprons must be worn during the laboratory period. Open-toed shoes are potentially dangerous and should not be worn. 4. Laboratory Experiments Group work: Experiments will be performed in groups of up to four students. Pre-lab review questions: Each student should arrive to the lab prepared and on time, with his or her lab manual, or a xerox of the report sheet having read the experimental procedure beforehand and written a summary. Completed pre-lab questions will be checked at the beginning of the lab experiment. Report form: Each lab report must be done individually, with and/or without the collaboration of lab partners. Before a student leaves the lab, a student must check out. Checking-out: Students must show their reports, clean their bench area, return the materials used to their appropriate locations. Before leaving the lab, they must sign out. Post-lab questions: Each student should complete the post-lab questions before submission of the laboratory report. Laboratory report: Laboratory reports are due one week after the experiment. Each lab report should comprise of the completed pre-lab review questions, report form and post-lab questions. Makeup: There will be no makeup lab. Late lab reports will be penalized and/or will not be accepted. Lab reports are to be completed individually. Laboratory grade: The laboratory grade is 25% of the course grade. All lab reports will be equally weighted. The grade of each lab will be graded on (1). Lab attendance and performance, (2). In-Lab report form, and (3). Pre- and Post-lab review exercises.

CHEMISTRY GENERAL CHEMISTRY I PHYSICAL SCIENCES CHEMISTRY GENERAL CHEMISTRY I FALL 2017

CHEMISTRY GENERAL CHEMISTRY I PHYSICAL SCIENCES CHEMISTRY GENERAL CHEMISTRY I FALL 2017 CHEMISTRY 1411 - GENERAL CHEMISTRY I PHYSICAL SCIENCES Houston Community College System Northwest College CHEMISTRY 1411 - GENERAL CHEMISTRY I FALL 2017 Day & Time: Monday & Wednesday: 6:00 pm 8:50 pm