Assertion : Many endothermic reactions which are non- spontaneous on increasing the temperature.
Reason : Endothermic reactions become spontaneous at high temperature if `DeltaS` is +ve and `TDeltaS gt DeltaH`.

For an endothermic reaction to be spontaneous

Assertion: All endothermic reactions which are non-spontaneous at room temperature become spontaneous at high temperatures. Reason : Endothermic reactions become spontaneous if DeltaS is positive and TDeltaS gt DeltaH .

The a reaction to be spontaneous at all temperature

For a reaction to be spontaneous at all the temperature:

An endothermic reaction which may be non spontaneous at low temperature because of entropy factor becomes spontaneous at high temperature.

Explain how an endothermic reaction can be spontaneous.