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UPSC Combined Geo-Scientist

Chemist

  • 3 descriptive papers
  • 200 marks each
  • 3 h per paper

Mains Paper I covers inorganic chemistry.

UPSC Combined Geo-Scientist, Mains · 2021 · Mains Paper I

Q11(d). Temperature and precipitate solubility

Question

Explain the effect of temperature on the solubility of a precipitate in gravimetric estimation.

Answer in brief

Solubility often increases on heating, but the direction depends on dissolution enthalpy and speciation; heating is not universally solubilising.

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Topic notes: gravimetric analysis, solubility product and organic precipitants, with every Civil Services, IFoS and Geo-Scientist PYQ →

Coverssolubility of precipitatetemperature effectKspvan 't Hoff equationgravimetric analysis

All parts of Question 11