115b_exam4key_07

115b_exam4key_07 - Chem 115b Spring 2007 Exam 4 April 12,...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
0 Chem 115b KEY Spring 2007 Print Name: Last First Exam 4 Last 3 digits of Student ID # April 12, 2007 TA's Name P r o f e s s o r R e i s l e r M a j o r Questions Points Score Grader 1 16 2 12 3 14 4 14 5 18 6 12 7 14 Total 100 INSTRUCTIONS 1. YOU MUST SHOW YOUR 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 INK TO BE ABLE TO REQUEST A REGRADE 4. Please read each question carefully before you write your answer. 5. There are 7 questions on 7 pages. ± Please Sign Below: I certify that I have observed all the rules of Academic Integrity while taking this examination. Signature:
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
1 1. (16 pts) A. (3 pts) For which process is Δ S negative? a) evaporation of 1 mol of CCl 4 (l) b) mixing 5 mL ethanol with 25 mL water c) compressing 1 mol Ne at constant temperature from 1.5 L to 0.5 L d) raising the temperature of 100 g Cu from 275 K to 295 K e) reducing the pressure of steam from 2 atm to 1.5 atm at constant temperature ANS: __ c __________ B. (3 pts) The driving force that produces voltage in a concentration cell is: 1. a) Temperature 2. b) Enthalpy 3. c ) Entropy 4. d) Standard cell potential 5. e) None of the above ANS: ___ c _______ C. (2 pts) Which of the following coordination compounds will form a precipitate when treated with an aqueous solution of AgNO 3 ? a) [Cr(NH 3 ) 3 Cl 3 ] b) [Cr(NH 3 ) 6 ]Cl 3 c) [Cr(NH 3 )Cl]SO 4 d) Na 3 [Cr(CN) 6 ] e) Na 3 [CrCl 6 ] ANS: ___ b _______ D. (8 pts) Write the formula for: (i) (a) tetraamminecopper(II) chloride: [Cu(NH 3 ) 4 ]Cl 2 .
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 9

115b_exam4key_07 - Chem 115b Spring 2007 Exam 4 April 12,...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online