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JEE CHEMISTRY MCQ: THERMODYNAMICS
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The change in entropy, ∆S is positive for an endothermic reaction. If enthalpy charge ∆H occurs at the same temperature T, then the reaction is feasible:
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Correct option: C
When ∆H<T∆S
Option C (When ∆H<T∆S) is correct because for a reaction to be feasible (spontaneous), the Gibbs free energy change (∆G) must be negative, and ∆G = ∆H - T∆S. With positive ∆H and ∆S, ∆G is negative only when T∆S > ∆H.
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