MID-TERM 2 2006

MID-TERM 2 2006 - Exam II, 2006 A. 5 points credit. Print...

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Exam II, 2006 A. 5 points credit . Print your name, perm number, and test version on your scantron answer key and on your exam booklet. Fill in the bubbles with your correct perm number and exam version on the scantron answer sheet. Multiple Choice Questions, 2.5 points each. Mark your answer on the scantron answer sheet. You need not show any work for these multiple choice questions. 1-2. Butane, C 4 H 10 (g) reacts with O 2 (g) to form CO 2 (g) and H 2 O (g). 1. The standard entropy change, S 0 for this reaction is a) negative b) positive c) zero 2. The standard enthalpy change, H 0 , is a) negative b) positive c) zero 3. Which of the following devices was used to supply electrical power for use by the crew during the Appollo space flights? a) Lithium batteries b) A fuel cell that used methane and oxygen c) Mercury batteries d) A fuel cell that used chlorine and hydrogen e) None of the above 4. The decomposition of HI is described by the following reaction 2 HI (g) H 2 (g) + I 2 (g) Which of the following expressions can be used to represent the rate of reaction? a) ½ [HI]/ t b) - [HI]/ t c) [HI]/ t d) -2 [HI]/ t e) None of the above 5. When a gas is compressed spontaneously from an initial volume of 44.8 L and pressure of 0.5 atm to a final volume of 22.4 L at an external pressure of 1.0 atm and constant temperature, the entropy change, S is a) zero for a constant temperature process b) positive c) -2269 J/T d) +2269 J/T e) none of the above
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6-8. A galvanic cell is described by the following shorthand line notation Pt|H
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This note was uploaded on 08/06/2008 for the course CHEM 1B taught by Professor Watts during the Winter '08 term at UCSB.

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MID-TERM 2 2006 - Exam II, 2006 A. 5 points credit. Print...

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