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UPSC Combined Geo-Scientist

Chemist

  • 3 descriptive papers
  • 200 marks each
  • 3 h per paper

Mains Paper II covers physical chemistry.

UPSC Combined Geo-Scientist, Mains · 2019 · Mains Paper II

Q8(a). Adsorption isotherm and gas volume

Question

Define an adsorption isotherm. Write Langmuir coverage θ as a function of equilibrium pressure and convert it to volume of adsorbed gas.

Answer in brief

θ=Kp/(1+Kp) and v=vₘKp/(1+Kp).

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CoversAdsorption isothermgas volumeSurface chemistry

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