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

 

THE EXAM (corrected to reflect class vote to move the exam date and review session date, changes in bold)

The exam will be held Monday April 11, 2005, in Academic Center D-001 (where previous Chemistry 110-11 exams were also held). 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.

 

REVIEW SESSIONS

Erika Pfaunmiller, our class study group facilitator, should run two review sessions the week of the exam. Sessions are generally held in Heim G41 at 9 PM, on Tuesdays and Thursdays. Exact dates and times will be announced the week of the exam.

 

I will run one review session in Heim G09 from 10 to 11:30 PM on Sunday, April 10, 2005. This is the large lecture room across the hall from our classroom. The time may change.

 

MATERIAL COVERED ON EXAM TWO

The exam will cover all material from lectures through Monday, April 4, 2005.

 

The new material covered in the textbook (Hill and Petrucci, General chemistry 3rd ed.) since exam two is: Chapter 15 sections 5-11; Chapter 16 sections 1-6; Chapter 17 sections 1-3.

New homework problems since exam two include: Chapter 15: 53, 56, 59, 64, 67, 70, 73, 77, 80, 83, 86, 87, 93, 96, 99. Chapter 16: 19, 23, 26, 29, 33, 35, 38, 41, 45, 48, 51, 54, 57, 61, 64, 67, 70, 73, 75, 80, 81. Chapter 17: 19, 23, 24, 27.

Please note that exam one and two material is fair game too (Chapter 11 sections 8-10 Chapter 12 sections 1-9; Chapter 13 sections 1-11; Chapter 14 sections 1-5; Chapter 15 sections 1-4) . Previously covered homework problems include: Chapter 11: 13, 64, 69, 70, 91 (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; Chapter 13: 24, 27, 31, 34, 37, 40, 41, 43, 46, 48, 52, 55, 58, 61, 65, 67, 68, 69, 72, 85; Chapter 14: 22, 25, 29, 32, 35, 38, 41, 43, 44, 47, 49, 52, 54, 57, 59, 62, 66, 69, 72, 89; Chapter 15: 21, 24, 30, 33, 35, 38, 41, 45, 48, 49.

 

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

http://www.lycoming.edu/chem/spring2005/111/keys.htm

 


 

Exam Practice Questions 3, Chemistry 111, Lycoming College, Mar. 7, 2005, Dr. Mahler

 

1) Possible essay / short answer type questions: Chapter 16 Review Questions 11-15 (page 727) and Chapter 17 Review Questions 1-7 (page 763).

 

2) Sulfate ion is added to a solution that has [Ba2+] = 0.030 M and [Ca2+] = 0.0010 M. Determine which cation will precipitate first, the concentration of sulfate needed to precipitate each ion, and if complete precipitation of ion occurs before the other begins to precipitate. Look up Ksp values as needed.

 

3) Chapter 16 Problems 68, 71, 76, 82.

 

4) Which substance in each pair has the higher molar entropy and why? a) Sn (s) or Sn (l)

b) PCl3 or PCl5 (both gases).

 

5) What would you expect the sign of ∆S to be for the following reactions and why?

a) N2O4 (g) 2 NO2 (g)        b) NaOH (s) + CO2 (g) NaHCO3 (s)

 

 

 

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