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exam3key - Chemistry 115a Professors Mak and Bau Thursday,...

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Chemistry 115a Name Professors Mak and Bau Last 4 Digits of SID# ____ - ____ - ____ - ____ Thursday, October 30, 2008 Lab Day & Time Hour Exam 3 First Letter of Family Name Question Points Score Grader 1 30 2 6 3 16 4 6 5 8 6 8 7 8 8 12 9 6 TOTAL 100 Instructions: 1. There are a total of thirteen (13) pages. Count the pages before you begin. 2. You must show your work to receive full credit (except for multiple choice questions). 3. If necessary, please continue your solutions on the back of the preceding page (facing you). 4. Do not use pencil. ACADEMIC INTEGRITY (Please sign below) : I certify that I have observed all the rules of ACADEMIC INTEGRITY while taking this exam. (signature)
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Last Name: ______________________ 2 1. (3 points each, no partial credit) (1) The balanced equation 4 BrCl 3 (g) + 3 SF 4 (g) 4 BrF 3 (g) + 3 SCl 2 (g) + 2 Cl 2 (g) a. is a condensation reaction b. is an oxidation-reduction reaction c. is a precipitation reaction d. none of the above (2) The balanced equation HF (g) + NH 3 (g) NH 4 F(s) a. is an acid/base reaction b. is a combustion reaction c. is an oxidation-reduction reaction d. none of the above (3) What precipitate is produced when aqueous lead (II) nitrate is mixed with aqueous cesium chloride? a. CsCl b. PbCl 2 c. CsNO 3 d. none of the above (4) Which compound in the following (unbalanced) reaction is the reducing reagent? NaNO
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This note was uploaded on 12/12/2010 for the course CHEM 115A taught by Professor Mak,bradforth during the Fall '10 term at USC.

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exam3key - Chemistry 115a Professors Mak and Bau Thursday,...

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