Q33 / 120 · VITEEE 2014 · Chemistry

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
  • Correct answer
    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

Solution

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 $\frac{x}{m}=\frac{k^{\prime} p}{1+k p}$

Hence, the correct answer is option: 'C'.

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