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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 · 2016 · Mains Paper II

Q2(i). Effusion of ammonia

Question

A capsule contains Ne at 1.0 atm and 290 K. Effusion through a pinhole into space causes a pressure drop of 0.30 torr s⁻¹. Find the pressure-drop rate for NH₃ at the same temperature and pressure.

Answer in brief

The initial pressure-drop rate is 0.327 torr s⁻¹.

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CoversEffusion of ammoniaKinetic theory

All parts of Question 2