1. Tardigrade
  2. Question
  3. Chemistry
  4. For a phase change H2O(l) <=>[][0° C . 1 bar] H2O(s)

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. For a phase change
$\ce{ H_2O_{(l)} <=>[][0^{\circ} C . 1 \, bar] H_2O_{(s)}}$

Solution:

$\Delta G^{\circ} = - RTIn K$
[$\Delta G^{\circ}$ = standard free energy change, $K$ = equilibrium constant]
If a substance is in equilibrium between two phases at constant temperature and pressure, its chemical potential must have the same value in both the phases.
$\therefore \, \, \Delta G^{\circ} = 0$