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Question

The heat of formation (ΔHf) of H2O(g) is -243 kJ. ΔE of it at temperature T is:


A
-243 + RT
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B
-243 - RT
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C
-243 + 1/2 RT
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D
-243 - 1/2 RT
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Solution

The correct option is C -243 + 1/2 RT
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