Q148 · CSIR-NET Chemistry, June 2011
Paper: CSIR-NET June 2011 · Subject: Physical Chemistry · Chapter: Surface Chemistry · Topic: Adsorption Isotherms · Marks: 2 · Difficulty: Hard
The adsorption of a gas on a solid surface exhibits the following isotherm. Which one of the following statements is true?
(a)Heat of adsoprtion is independent of coverage
(b)Adsorption is multilayer
(c)Heat of adsorption varies monotonically with coverage
(d)Heat of adsorption varies exponentially with coverage
Answer
Answer: A ✓ checked by 4AB · confidence high
Explanation
The saturating curve is a Langmuir monolayer isotherm, whose model assumes the heat of adsorption does not depend on coverage (a).
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