NEET | 2016Purification and characteristic of organic compounHard

Question

Which one of the following characteristics is associated with adsorption?

Options

$∆$ G is negative but $∆$ H and $∆$ S are positive

$∆$ G, $∆$ H and $∆$ S all are negative

$∆$ G and $∆$ H are negative but $∆$ S is positive

$∆$ G and $∆$ S are negative but $∆$ H is positive

Solution

$∆$ H < 0 Adsorption process is exothermic
$∆$ G < 0 Adsorption process is Feasible
$∆$ S < 0 Adsorption process is accompanied of decrease in entropy.

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