Question

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For a reaction both delta H and delta S are positive. Under what conditions will the reaction be spontaneous?
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Class 11 CBSE

Answer 1

For a spontaneous reaction, the sign on Delta G must be negative. Gibbs free energy relates enthalpy, entropy and temperature. A spontaneous reaction will always occur when Delta H is negative and Delta S is positive, and a reaction will always be non-spontaneous when Delta H is positive and Delta S is negative.

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Answer 2

It will be spontaneous at high temperatures.