08_CHM_31_Summer_Exam_1

08_CHM_31_Summer_Exam_1 - Name CHM 31 First Hour Exam...

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Name: ________________________________________ CHM 31 First Hour Exam, Summer 2008 1 General instructions: Please label each page with your name . Read the instructions for each problem. Show your work in sufficient detail to demonstrate your mastery of the subject, but be brief if possible! Work those problems you know first, and then move on to those you are not certain about. Please note each problem has the number of points in parentheses; the entire exam consists of 120 points on 6 pages total. Time limit = 60 minutes . If you must use the back of a page, please indicate clearly the flow of your work (label the problem number). Please write legibly so full credit may be granted for correct answers, and partial credit may be awarded for correct steps. This page may be torn off the exam C please make sure your name is on the remainder! R = 8.3145 J / ( K * mol ) = 0.08206 L * atm / K * mol
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Name: ________________________________________ CHM 31 First Hour Exam, Summer 2008 2 1. (24) Please circle the letter of the correct answer for each of the following problems. A. What is the pH of a 1.5 x 10 -3 M solution of HNO 3(aq) ? A. 0.47 B. 2.82 C. 1.76 D. 0.15 E. 3.18 B. Which of the following actions changes the value of the equilibrium constant for the reaction H 2(g) + I 2(g) <===> 2HI (g) ? A. Adding more H 2(g) B. Removing some H 2(g) C. Changing the volume D. Heating the flask E. Adding N 2(g) (an inert gas) C. When a nonvolatile solute is added to a volatile solvent, the solution vapor pressure
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08_CHM_31_Summer_Exam_1 - Name CHM 31 First Hour Exam...

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