Exercise : Temperature dependence of Gibbs Free Energy

Supercooled liquid water at - 50℃ will freeze adiabatically. ∆G, ∆S of this change?

  • Final state might be a mixture of ice and liquid water.
  • Liquid water and ice can coexist only at the melting point T, 0℃
    Let’s set the fraction of ice at the final state .

    Split the process into

1) ∆G

2) ∆S

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Thermodynamics in Energy Engineering

Hanyang University