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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 · 2018 · Mains Paper II

Q3(a). Units in molar Gibbs energy

Question

A gas has Gₘ=RTln (p/bar)+a+bp+cp², where a,b,c depend on temperature. Find their SI units.

Answer in brief

[a]=J mol⁻¹, [b]=J mol⁻¹ Pa⁻¹=m³ mol⁻¹ and [c]=J mol⁻¹ Pa⁻².

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CoversUnits in molar Gibbs energyThermodynamics

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