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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

Q9(b). Coupling constant

Question

What is the coupling constant J?

Answer in brief

J is the frequency separation, in hertz, between adjacent lines of a first-order multiplet caused by a particular coupled pair.

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As written for the answer booklet: the diagram carries the working, the lines stay short. Read here only; it is not offered as a download.

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CoversCoupling constantProton NMR

All parts of Question 9