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A reaction is spontaneous at low tempera...

A reaction is spontaneous at low temperature but non- spontaneous at high temperature. Which of the following is true for the reaction?

A

`DeltaH gt 0, DeltaS gt 0`

B

`DeltaH lt 0, DeltaS gt 0`

C

`DeltaH gt 0, DeltaS = 0`

D

`DeltaH lt 0, DeltaS lt 0`

Text Solution

Verified by Experts

The correct Answer is:
D
We know that `DeltaG=DeltaH-TDeltaS` When `DeltaHlt0` and `DeltaSlt0` then `DeltaG` will be negative at low temperatures and the reaction will be spontaneous.
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