Sample1 - Chem 6 Sample exam 1(150 points total This is a closed book exam to which the Honor Principle applies The last page contains equations

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Chem 6 Sample exam 1 (150 points total) @ This is a closed book exam to which the Honor Principle applies. @ The last page contains equations and physical constants; you can detach it for easy reference. @ Please write clearly and SHOW YOUR WORK. If you need to write on the back of the exam paper, please indicate this clearly. @ Some questions are more challenging than others. Allot your time accordingly, and try to answer EVERY question. @ Please put your name both on this page and on page 2. NAME: _________________________
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2 NAME: ____ ________ ________ FOR GRADING USE ONLY Question 1 (15 pts). ....................... __________ Question 2 (12 pts). ....................... __________ Question 3 (10 pts). ....................... __________ Question 4 (14 pts). ........................ __________ Question 5 (16 pts). ..................... __________ Question 6 (15 pts) . ....................... __________ Question 7 (20 pts) . ....................... __________ Question 8 (14 pts) . ....................... __________ Question 9 (14 pts) . ....................... __________ Question 10 (20 pts) . ....................... __________ TOTAL (150 pts) ...................... ===========
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3 1. (15 pts, 5 each). Consider the reaction 2HI(g) ----> H 2 (g) + I 2 (g) At 443 °C, the rate depends on [HI] as follows: [HI] (M) 0.005 0.010 0.020 Rate (Ms –1 ) 7.5x10 –4 3.0x10 –3 1.2x10 –2 a. Find the order of the reaction and the rate law. Explain your answer. b. Find the rate constant. Don't forget the units. c. Find the rate (don't forget the units) if [HI] is 0.0020 M.
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4 2. (12 pts) (a, 3 pts each) Sketch an energy profile on the axes provided for 3 different reactions with the following characteristics (all energies are in kJ/mol). Be sure to clearly label the energies of the reactants (R) and products (P), as well as E and E a .
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This note was uploaded on 05/01/2008 for the course CHEM 5/6 taught by Professor Gribble during the Spring '08 term at Dartmouth.

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Sample1 - Chem 6 Sample exam 1(150 points total This is a closed book exam to which the Honor Principle applies The last page contains equations

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