Review Sheet for Exam One, General Chemistry II 111, Lycoming College, Dr. Mahler



The exam will be held Friday, February 4, 2005, in Academic Center D-001 (where Chemistry 110 exams were also held last semester). You can start the exam at about 11:20 AM (just after the previous class period ends) and must finish by 12:45 PM (when the next scheduled class period starts). Please sit so that there is an empty chair / seat between you and the next nearest person in every direction.


The exam will have a periodic table with it. There will be a matching section with possibly useful equations. Constants and required data will be provided. Possible exam question formats include multiple choice, matching, short answer, essay, and calculations.


You are allowed to have pen or pencil with eraser and a calculator. No programmable calculators are allowed everyone must show me their calculator to get an exam. If you must use a programmable calculator, I will clear the memory on it first (but you will have to wait if others have questions or needs). No other materials are allowed out during the exam. Any personal electronic devices being used (cell phone, PDA, music headphones, etc.) will be confiscated until the end of the exam and may result in a penalty on the exam.




Erika Pfaunmiller, our class study group facilitator, will run two review sessions this week. Both sessions will be in Heim G41 at 9 PM, on Tuesday February 2, and Thursday February 9, 2005.


I will run one review session in in Academic Center D-001 from 8:30 to 10 PM on Wednesday, February 3, 2005. Please note this is a room change from the initial email.




The exam will cover all material from lectures through Monday, January 31, 2005.


The material covered in the textbook (Hill and Petrucci, General chemistry 3rd ed.) is: Chapter 11 sections 8-10; Chapter 12 sections  1-9 (all); and Chapter 13 sections 1-5.


Homework problems include: Chapter 11: 13, 64, 69, 70, 91 (only count atoms in unit cell); Chapter 12: 21, 24, 25, 28, 29, 32, 33, 36, 38, 39, 41, 43, 45, 48, 51, 53, 55, 57, 58, 62, 63, 67, 70, 71, 76, 77, 79; and from Chapter 13: 24, 27, 31, 34, 37, 40, 41, 48, 85a,b.


Keys for homework, practice questions and quizzes can be found on the web here:


More practice questions will be distributed Wednesday in class.


Exam Practice Questions 1, Chemistry 111, Lycoming College, Feb. 2, 2005, Dr. Mahler

(adapted from Jones and Atkins, Chemistry, 4th Ed.)


1) In the reaction 3 ClO-1 2 Cl-1 + ClO3-1 (all aq), the rate of formation of Cl-1 is 3.6 mol/L min. What are the rates for ClO-1 and ClO3-1?



2) Write the rate laws for the following reactions: a) X + 2Y Z is second order in X and one-half order in Y. b) The reaction 2 A + B C is found to be first order in A, first order in B and three-halves order overall.



3) For the reaction 2A + B product, the following data were obtained:


[A]o, mol/L

[B]o, mol/L

Initial rate, mol/L s

















Find: a) the order of each reactant and the overall order; b) the rate law for the reaction; c) the value of k the rate constant and its units; d) the rate for Experiment 4.



4) Determine the rate constants for the following first order reactions:

a) A B, given that the concentration of A decreases to half its initial value in 1000 s.

b) A B, given that the concentration of A decreases from 0.33 mol/L to 0.14 mol/L in 47 s.



5) Dintrogen pentoxide, N2O5, decomposes by first order kinetics with a rate constant of 3.7 x 10-5 s-1 at 298 K. a) What is the half life in hours for this reaction? b) If the initial concentration of N2O5 is 2.33 x 10-2 mol/L, what will the concentration be in 2.00 h? c) How much time in minutes will it take for N2O5 concentration to change from 23.3 mmol/L to 17.6 mmol/L?


Note these are practice questions for kinetics only. For more kinetics and other topics covered, please see the homework, quizzes, and previous practice questions.