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Question: Answered & Verified by Expert
In Langmuir's model of adsorption of a gas on a solid surface
ChemistrySurface ChemistryNEET
Options:
  • 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
Solution:
2760 Upvotes Verified Answer
The correct answer is: the mass of gas striking a given area of surface is proportional to the pressure of the gas
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 ∝ Number of gas moles (mass) striking the given area of surface of adsorbent.

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