In Langur's mofel of adsorption of a gas on the solid surface :

Options

A. the rate of dissociation of adsorbed molecules on the solid surface does not depend on the surface covered.
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 proporational to the pressure of the gas
D. none

Answer

C

Explanation

is the correct answer. According to Langmur's molel,
`x/m=(aP)/(1+bP)`