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easyMCQAIEEE 20062026Chemistry
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In Langmuir’s model of adsorption of a gas on a solid surface:

  1. A
    the rate of dissociation of adsorbed molecules from the surface does not depend on the surface covered
  2. B
    the adsorption at a single site on the surface may involve multiple molecules at the same time
  3. C
    the mass of gas striking a given area of surface is proportional to the pressure of the gas
  4. D
    the mass of gas striking a given area of surface is independent of the pressure of the gas

Solution & Step-by-step Explanation

According to kinetic theory of gases, the number of molecules striking a unit area of the surface per unit time is proportional to the pressure () of the gas. This is a fundamental assumption in deriving the Langmuir Adsorption Isotherm.

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Try it yourself before checking the explanation above.

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

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