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NEET UG CHEMISTRY MCQ: SURFACE CHEMISTRY

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Amongst the following statements regarding adsorption, those that are valid are:
(A)

\Delta \,H

becomes less negative as adsorption proceeds.
(B) On a given adsorbent, ammonia is adsorbed more than nitrogen gas.
(C) On adsorption, the residual force acting along the surface of the adsorbent increases.
(D) With increase in temperature, the equilibrium concentration of adsorbate increases.

View answer and explanation

Correct option: C

(A) and (B)

Option C is correct.

\Delta H

becomes less negative as adsorption proceeds because fewer active sites are available, and ammonia is adsorbed more than nitrogen gas due to stronger interactions.

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