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Assertion: Adsorption is exothermic and ...

Assertion: Adsorption is exothermic and spontaneous in spite of the fact that adsorption is accompanied with deccrease in entropy.
Reason: The factor `TDeltaS` is lesser than `DeltaH`

A

If both the assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both the assertion and reason are true but reason is not the correct explantion of the assertion.

C

If the assertion is true but reason is false.

D

If assertion is false but reason is true.

Text Solution

Verified by Experts

The correct Answer is:
D
`DeltaS` is `-ve` because adsorption leads to more orderd arrangement.
Thus `DeltaG=DeltaH-TDeltaS`
`Delta=-ve` only when `DeltaHgtTDeltaS` .
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