From the values of ?H and ?S, predict which of the following reactions would be spontaneous at 25°C. If either of the reactions is nonspontaneous at 25°C, at what temperature might it become spontaneous?

(a) reaction A: ?H = 12.1 kJ/mol, ?S = 29 J/K·mol
Is this spontaneous or nonspontaneous? Also, for the reaction what is ?G and T?

(b) reaction B: ?H = 2.0 kJ/mol, ?S = -110. J/K·mol
Is this spontaneous or nonspontaneous? Also, for the reaction what is ?G and T?

Please help and if you can, show me how you did the work. Thanks.

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