1.

Which one of the following characteristics is associated with adsorption

Answer»

`DeltaG`is NEGATIVE but `DeltaH` and `DELTAS` are positive
`DeltaG, DeltaH` and `DeltaS` all are negative
`DeltaG` and `DeltaH` are negative but `DeltaS` is positive
`DeltaG` and `DeltaS` are negative but `DeltaH` is positive

Solution :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 DeltaS` all are negative


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