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JEE Main2015ChemistryThermodynamics (C)Actual

The increase of pressure on i c e ⇌ w a t e r system at constant temperature will lead to:

Options

  1. AA decrease in the entropy of the system
  2. BAn increase in the Gibbs energy of the system
  3. CA shift of the equilibrium in the forward direction
  4. DNo effect on the equilibrium

Correct answer

C. A shift of the equilibrium in the forward direction

Step-by-step solution

H 2 O s ⇌ H 2 O ( l ) At melting point of H 2 O at (273 K = T) dG = VdP - SdT At constant temperature d ∆ G = ∆ V d P = M ρ L - M ρ S d P ρ L = D e n s i t y   o f   L i q .   H 2 O ρ S = D e n s i t y   o f   i c e d ∆ G = M ρ S   -   ρ L ρ L   ⋅   ρ S d P Integrating ∆ G = M ρ S   -   ρ L ρ L   ⋅   ρ S ( P - 1 ) Pressure increased from 1 atm to P at

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