Solubility with Pressure at a Fixed Temperature

Change of Solubility with Pressure at a Fixed Temperature 

When a solid is in equilibrium with the solute in an ideal solution under isothermal conditions  

If the pressure is changed, the solubility can change, but if equilibrium is maintained, then 

The chemical potential of the solid is a function only of the pressure at constant temperature, whereas the chemical potential of the solute in the saturated solution 

Substituting from Equations (14.50) and (14.51) into Equation (14.49), we obtain 

---