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Question: Answered & Verified by Expert
The Langmuir adsorption isotherm is deduced using the assumption:
ChemistrySurface ChemistryNEETNEET 2007
Options:
  • A the adsorption sites are equivalent in their ability to adsorb the particles
  • B the heat of adsorption varies with coverage
  • C the adsorbed molecules interact with each other
  • D the adsorption takes place in multilayers
Solution:
1851 Upvotes Verified Answer
The correct answer is: the adsorption sites are equivalent in their ability to adsorb the particles
Langmuir adsorption isotherm is based on that every adsorption site is equivalent and the ability of a particle to binding is independent of sites are either occupied or unoccupied.
Related Theory
The key difference between Freundlich and Langmuir adsorption isotherms is that
Freundlich adsorption isotherm is empirical, whereas Langmuir adsorption isotherm is theoretical. The adsorption isotherm is a primary method that we can use to predict the adsorption capacity of a particular substance.

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