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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

Q8(iii). Chlorine force constant

Question

The vibrational wavenumber of ³⁵Cl₂ is 559.71 cm⁻¹. Calculate the Cl–Cl force constant, taking the atomic weight as exactly 35.

Answer in brief

k=3.23×10² N m⁻¹.

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CoversChlorine force constantVibrational spectroscopy

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