08_CHM_31_Summer_Exam_2

08_CHM_31_Summer_Exam_2 - Name: _ CHM 31 Second Hour Exam,...

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Name: ________________________________ CHM 31 Second 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 7 pages total (including this cover page). 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). The last page is multiple choice questions. This page may be torn off the exam C please make sure your name is on the remainder. R = 8.31451 J / ( K * mol ) = 0.08206 L * atm / K * mol 1 L*Atm = 101.32 J 4.184 J / K * g = specific heat capacity of liquid water ( H 2 O (l) ) Species ΔG f o (kJ / mol) ΔH f o (kJ / mol) S o (J / K * mol) H 2(g) 0 0 131 H (g) 203 217 115 H + (aq) 0 0 0 H 2 O (l) -237 -286 70 H 2 O (g) -229 -242 189 C 8 H 18(l) 23 -181 312 C 8 H 18(g) 16 -209 467 C (s) (graphite) 0 0 5.74 CO (g) -137 -111 198 CO 2(g) -394 -393 214 O 2(g) 0 0 205 O (g) 232 249 161 O 3(g) 163 143 239
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Name: ________________________________ CHM 31 Second Hour Exam, Summer 2008 2 1. (20) Briefly answer each question below in the space provided if possible. A.
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08_CHM_31_Summer_Exam_2 - Name: _ CHM 31 Second Hour Exam,...

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