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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 · 2020 · Mains Paper II

Q13(b). Numerical second-order rate constant

Question

For the preceding reaction, a=0.075 mol L⁻¹, b=0.050 mol L⁻¹ and [B]=0.020 mol L⁻¹ after 1 hour. Calculate k.

Answer in brief

k=16.22 L mol⁻¹ h⁻¹=4.505×10⁻³ L mol⁻¹ s⁻¹.

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CoversNumerical second-order rate constantChemical kinetics

All parts of Question 13