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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

Q6(a). Second-order half-life

Question

HI decomposition is second order. Its half-life is 13.5 minutes at initial HI pressure 1.0 bar. Find the half-life at initial pressure 0.1 bar.

Answer in brief

t_(1/2)=135 min.

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CoversSecond-order half-lifeChemical kinetics

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