In Langumir's model of adosrption of a gas on a solid surface :

Options

A. the rate of dissociation of adsorbed molecules from the surface does not depend on the surafce covered
B. the adsorption at a single site on the surafce may involve multiple 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 surfaces is independent of the pressure of the gas

Answer

C

Explanation

The adsorption of a gas is directly proportional to the pressure of gas.