10
Question
The following statements relate to the adsorption of gases on a solid surface.
Identify the incorrect statement among them :
The following statements relate to the adsorption of gases on a solid surface.
Identify the incorrect statement among them :
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Solution
The correct option is B On adsorption, the residual forces on the surface are increased.
(A) Enthalpy of adsorption is negative as heat is liberated during adsorption. The process is exothermic.
Hence, statement A is correct.
(B) On adsorption, the residual forces on the surface are decreased as the surface is covered with the substance being adsorbed which develops forces between absorbate and adsorbent.
Hence, statement B is incorrect.
(C) On adsorption decreases in surface energy appears as heat.
This makes the process exothermic.
Thus, statement C is correct.
(D) Entropy of adsorption is negative as there is a decrease in the disorder.
Hence, the statement D is correct.
(A) Enthalpy of adsorption is negative as heat is liberated during adsorption. The process is exothermic.
Hence, statement A is correct.
(B) On adsorption, the residual forces on the surface are decreased as the surface is covered with the substance being adsorbed which develops forces between absorbate and adsorbent.
Hence, statement B is incorrect.
(C) On adsorption decreases in surface energy appears as heat.
This makes the process exothermic.
Thus, statement C is correct.
(D) Entropy of adsorption is negative as there is a decrease in the disorder.
Hence, the statement D is correct.
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