求选择题解答步骤越详细越好

24) Above what temperature does the following reaction become nonspontaneous?
2 H2S(g) + 3 O2(g) — 2 SO2(g) + 2 H2O(g) AH = -1036 kJ; AS = -153.2 J/K
A) 6.762 x 103 K
B) 158.7 K
C) 298 K
D) This reaction is nonspontaneous at all temperatures.
E) This reaction is spontaneous at all temperatures.
25) Calculate ArxnS° for the following reaction. The S° for each species is shown below the reaction.
C2H2(g) + H2(g) — C2H4(g)
S°(J/mol.K) 200.9 130.7 219.3
A) +112.3 J/K
B) +550.9 J/K
C) -112.3 J/K
D) +337.1 J/K
E) -550.9 J/K
26) Calculate the ArxnG° using the following information.
2 HNO3(aq) + NO(g) — 3 NO2(g) + H2O(l) ArxnG° = ?
AfH° (kJ/mol) -207.0 91.3 33.2 -285.8
S°(J/mol_K 146.0 210.8 240.1 70.0
A) -151 kJ
B) -85.5 kJ
C) +50.8 kJ
D) +222 kJ
E) -186 kJ
27) Consider the following reaction at constant P. Use the information here to determine the value of ASsurr at 298 K. Predict whether or not this reaction will be spontaneous at this temperature.
N2(g) + 2 O2(g) — 2 NO2(g) AH = +66.4 kJ
A) ASsurr = +223 J/K, reaction is spontaneous spontaneous
B) ASsurr = -223 J/K, reaction is not spontaneous
C) ASsurr = -66.4 J/K, reaction is not spontaneous
D) ASsurr = +2656 kJ/K, reaction is not spontaneous
E) ASsurr = -66.4 J/K, it is not possible to predict the spontaneity of this reaction without more information.

解题思路： 根据反应自发的条件分析。
解题过程：

最终答案：略