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Which one of the following characteristi...

Which one of the following characteristics is associated with adsorption ?

A

`DeltaG` is negative but `DeltaH` and `DeltS` are positive

B

`DletaG, DeltaH "and" DeltaS` all are negative

C

`DeltaG "and" DeltaH` are negative but `DeltaS` is positive

D

`DeltaG "and" DeltaS` are negative but `DeltaH` is positive

Text Solution

Verified by Experts

The correct Answer is:
B
Adsorption is spontaneous process,
so `DeltaG` = negative
Adsorption is exothermic process,
so `DeltaH` = negative
In adsorption entropy decreases,
so `DeltaS` =negative
so `DeltaG,DeltaH "and" Delta G` all are negative
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