PracticeEx01 2005 Key

PracticeEx01 2005 Key - H 2 O(l) = -285.83 H° reaction =...

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CHE132 Answer Key Midterm 1 on 2/16/05 Question Form 0 1 B 2 A 3 D 4 B 5 C 6 C 7 B 8 C 9 D 10 A 11 E 12 B 13 B 14 E 15 B 16 A 17 E 18 A Question 19. Question 20 Calculate reaction for the following reaction at 350 K given that reaction = -574.9 J K -1 and given H f ° for each reactant and product. 2NH 3 (g) + O 2 (g) NH 4 NO 3 (s) + H 2 O(l) H f ° kJ mol -1 : NH 3 (g) = -45.9, O 2 (g) = 0, NH 4 NO 3 (s) = -365.6,
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Unformatted text preview: H 2 O(l) = -285.83 H° reaction = (-365.6+-285.83) – (2x-45.9) = -651.43 - -91.8 = -559.63 G° reaction = H° reaction- T S° reaction = -559.63 x 10 3 – (-350x574.9) = -358.4 kJ mol-1 Correct H° reaction 2 points, correct equation 2 points....
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This note was uploaded on 06/29/2008 for the course CHE 132 taught by Professor Hanson during the Spring '08 term at SUNY Stony Brook.

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