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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

Q13(c). Diene concentration

Question

A diene in methanol has absorbance 0.65 at 242.5 nm in a 1.00 cm cell. Find its concentration if the molar absorptivity is 13,100.

Answer in brief

c=4.96×10⁻⁵ mol L⁻¹ (49.6 μmol L⁻¹).

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CoversDiene concentrationAbsorption spectroscopy

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