2006 midterm 2 answers

2006 midterm 2 answers - THIS IS EXAM VERSION A Version B...

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THIS IS EXAM VERSION A Version B question number in parenthesis 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). Version B (16) 1. The standard entropy change, S 0 for this reaction is a) negative b) positive ANSWER c) zero (17) 2. The standard enthalpy change, H 0 , is a) negative ANSWER b) positive c) zero (18) 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 ANSWER (AN OXYGEN AND HYDROGEN FUEL CELL) (19) 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 ANSWER (-½ [HI]/ t) (20) 5. When a gas is compressed spontaneously from an initial volume of 44.8 L and
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This note was uploaded on 04/07/2008 for the course CHEM 1B taught by Professor Watts during the Winter '08 term at UCSB.

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2006 midterm 2 answers - THIS IS EXAM VERSION A Version B...

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