Let us consider an endothermic reaction which is non-spontaneous at the freezing point of water. However, the reaction is spontaneous at boiling point of water. Choose the correct option. (A) Both H a

Question

Let us consider an endothermic reaction which is non-spontaneous at the freezing point of water. However, the reaction is spontaneous at boiling point of water. Choose the correct option.

(A) Both H and S are (–ve)
(B) Both H and S are (+ve)
(C) H is (–ve) but S is (+ve)
(D) H is (+ve) but S is (–ve)

Prashant Kotian · Accepted Answer

Correct answer: B. Case I Case II At freezing point At boiling point G > 0 G < 0 H – TS > 0 H –ThS < 0  H > 0 & S < 0

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