Which of the following statements is correct for spontaneous adsorption of a gas?
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a
∆S is negative and therefore, ∆H should be highly positive
b
∆S is negative and therefore, ∆H should be highly negative
c
∆S is positive and therefore, ∆H should be negative
d
∆S is positive and therefore, ∆H should also be highly positive
answer is B.
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Detailed Solution
Adsorption is exothermic. = -veDue to Adsorption of gases on solids (or) dissolved solute particles of a solution on solid surface,randomness decreases. =-veThe process of adsorption is spontaneous. =-veAt low Temperatures, magnitude of > TFrom = - T ; will be -vethe process is spontaneous