1)

In Langmuir's model of adsorption of gas  on a solid surface , 


A) the rate of dissociation of adsorption molecules from the surface does not depend on the surface converted

B) the adsorption at a single site on the surface may involve multiple molecules at the same time

C) The mass of gas striking a given area of surface is proportional to the pressure of the gas

D) the mass of gas striking a given area of surface is independent of the pressure of the gas

Answer:

Option C

Explanation:

 According to Langmuir's adsorption isotherm, the mass of gas striking a given area of surface is proportional to the pressure of the gas as $\frac{x}{m}=\frac{k'p}{1+kp}$