1.

Which among the following statements are correct with respect to adsorption of gases on a solid? (i) The extent of adsorption is equal to kph according to Freundlich isotherm (ii) The extent of adsorption is equal to kp in according to Freundlich isotherm(iii)At high pressure, extent of adsorption becomesindependent of pressure. (iv) Freundlich adsorption isotherm fails at low pressure

Answer»

<P>(i) and (ii)
(ii) and(III)
(i)and (iv)
(iii) and (iv)

Solution :According to FREUNDLICH ADSOPRTION ISOTHERM `(x)/(m)= kp^(1//n)`
Also, according to Freundlich adsorption isotherm, at low pressure `(x)/(m) prop p`i.e., extent of adsorption varies directly with pressure.


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