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UPSC Combined Geo-Scientist

Chemist

  • 2 objective papers
  • 120 questions each
  • 2 h per paper
  • 100 + 300 marks

Prelims Paper II covers chemistry.

UPSC Combined Geo-Scientist, Prelims · 2024 · Paper II, Chemistry · Q37 of 120

Geo-Scientist Prelims 2024 Chemistry Q37: Which one of the following does not represent a correct expression…

QuestionIonic equilibrium / salt hydrolysis

Which one of the following does not represent a correct expression for hydrolysis constant for the equilibrium reaction A⁻ + H₂O ⇌ OH⁻ + HA ?

  1. (a) K_h = [OH⁻][HA]/[A⁻]
  2. (b) pK_h = pK_w − pK_a
  3. (c) K_h = K_w/K_a
  4. (d) K_h = [OH⁻][HA]

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