The dependence of vapour -solution equilibria on temperature and pressure

The dependence of vapour-solution equilibria on temperature and pressure 

The condition of equilibrium between a solution phase a and a vapour phase J3 for a component i may be written 

If the solution is ideal depends only on the variables T, p and Xi according to (8 14). Similarly, if the vapour phase is perfect /tf depends only on T and Pi in accordance with (3 19)  

The relation (8 32) may therefore be expanded in terms of the independent variables  

The partials with respect to temperature and pressure will by now be very familiar, and the partials with respect to Xi and Pi are obtained immediately from (8 14) and (8 33) respectively. Hence 

---