Question

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

• A. the rate of dissociation of adsorbed molecules from the 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 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 1

Answer: (C)

In Langmuir's model of adsorption of a gas on a solid surface the mass of gas striking a given area of surface is proportional to the pressure of the gas.
Pressure of gas $\propto$ Number of gas moles (mass) striking the given area of surface of adsorbent.