# q5pf09 - 3. 16.6 kJ 4.-16.6 kJ 4. Consider the reaction...

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1. Assuming the apparatus itself absorbs no heat, what will be the final temperature of a bomb calorimeter's heat sink consisting of 100 mL of water at 15 °C if the reaction releases 6.276 kJ of heat? 1. 30 K 2. 303 °C 3. 30 °C 4. 0 °C 5. -303 °C 6. 273 K 2. Calculate the change in enthalpy for the reaction below based on the provided data. N 2 H 4 (l) + H 2 (g) 2NH 3 (g) ∆H = -201.1 kJ∙mol -1 N 2 (g) + 3H 2 (g) 2NH 3 (g) ∆H = -91.8 kJ∙mol -1 CH 3 OH(l) CH 2 O(g) + H 2 (g) ∆H = 85.2 kJ∙mol -1 -------------------------------------------------------------------------- CH 2 O(g) + N 2 (g) + 3H 2 (g) N 2 H 4 (l) + CH 3 OH(l) ∆H = ? 1. ∆H = -28.4 kJ∙mol -1 2. ∆H = -207.7 kJ∙mol -1 3. ∆H = 194.5 kJ∙mol -1 4. ∆H = -378.1 kJ∙mol -1 5. ∆H = 24.1 KJ∙mol -1 3. Calculation the work (w) for the following reaction conducted at 1000 °C: SF 6 (g) + O 3 (g) SO 3 (g) + 3 F 2 (g) 1. 21.2 kJ 2. -21.2 kJ

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Unformatted text preview: 3. 16.6 kJ 4.-16.6 kJ 4. Consider the reaction below. 2 S 2 O 2 (g) + 4 F 2 (g) → 2 S 2 (g) + 4 OF 2 (g) Its change in entropy would likely be (positive/negative/either) and (large/small) 1. either, small 2. negative, small 3. positive, small 4. either, large 5. negative, large 6. positive, large 5. Which of the follwing reactions would spontaneous at some temperatures and non-spontaneous at other temperatures? rxn ∆S rxn (J∙mol-1 ∙K-1 ) ∆H rxn (kJ∙mol-1 ) I-25.20 2.45 II 1.15 879.23 III 13.93-367.10 IV-4.76-98.04 1. I ans II 2. I and III 3. I and IV 4. II and III 5. II and IV 6. III and IV 6. What would be the total energy associated with the motion of a gaseous system composed of 1 mole each of CO 2 , O 2 and O 3 ? 1. 12 RT 2. 24 RT 3. 18RT 4. 9RT 5. 6RT 6. 15RT...
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## This note was uploaded on 03/04/2011 for the course CH 302 taught by Professor Holcombe during the Spring '07 term at University of Texas.

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q5pf09 - 3. 16.6 kJ 4.-16.6 kJ 4. Consider the reaction...

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