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Adsorption is accompanied by :-...

Adsorption is accompanied by :-

A

decrease in enthalpy of the system

B

increase in enthalpy of the system

C

decrease in free energy of the system

D

`T Delta S` for the process is positive.

Text Solution

Verified by Experts

The correct Answer is:
A, C
As adsorption is spontaneous, `DeltaG` for the process is -ve . Adsorption is accompanied by decrease in randomness, therefore `DeltaS` and `TDeltaS` for the process is also negative. As `DeltaS` for the process is -ve and the process is spontaneous, `DeltaH` for the process the to be -ve i.e, enthalpy of the system decrease.
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