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UPSC Combined Geo-Scientist

Chemist

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

Mains Paper III covers analytical and organic chemistry.

UPSC Combined Geo-Scientist, Mains · 2020 · Mains Paper III

Q2(a). Uncertainty in solubility

Question

Kₛₚ(AgCl)=(41.2±0.3)×10⁻⁸. Calculate molar solubility with uncertainty.

Answer in brief

s=(6.419±0.023)×10⁻⁴ mol L⁻¹, under the ideal pure-water approximation.

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CoversUncertainty in solubilityPropagation of error

All parts of Question 2