Exam II - Chemistry 105 B Exam 2 Dr Jessica Parr First...

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1 Chemistry 105 B PLEASE PRINT YOUR NAME IN BLOCK LETTERS Exam 2 Name: __________________________________ 03/06/08 Last 4 Digits of USC ID:____ ____ ____ ____ Dr. Jessica Parr Lab TA’s Name: _________________________________ Lab: Tu 9 / Tu 1 / Tu 4 / W 1 / W 4 Please circle lab section above . Question Points Score Grader 1 10 2 10 3 4 4 6 5 10 6 10 7 10 8 10 9 15 10 15 Total 100 Please Sign Below: I certify that I have observed all the rules of Academic Integrity while taking this examination. Signature: _______________________________________________________________ Instructions: 1. You must show work to receive credit. 2. If necessary, please continue your solutions on the back of the preceding page (facing you). 3. YOU MUST use black or blue ink. (No pencil, no whiteout, no erasable ink.) 4. There are 10 problems on 9 pages. Please count them before you begin. A periodic table and some useful equations can be found on the last page. 5. Good luck!! =) First Letter of last Name
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2 1. (10 pt) Determine if the following statements are true or false. If false correct the statement. a. When covalent oxides are dissolved in water basic solutions result. True or False b. For a certain reaction Q = 6.78 and K = 3.56, the reaction must shift to the left to reach equilibrium. True or False c. Adding a catalyst will change the rate of a reaction without changing the equilibrium constant. True or False d. pH + pOH = 14 at all temperatures. True or False e. K a K b = K w at all temperatures. True or False 2. (10 pt) Will solutions of the following salts be acidic, basic or neutral?
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