Question

Write down the equation for the Lewis-Randall rule for fugacity of species in an ideal solution.

Answer 1

Lewis-Randall rule : Lewis-Randall rule states that, the fugacity of a component is directly proportional to the mole fraction of the component in the solution in an ideal solution.

The equation used for the Lewis-Randall rule for fugacity of species in an ideal solution is :

`f_i=X_i* f_i^o`

where,

`f_i` = fugacity in the solution

`f_i^o` = fugacity of a pure component

`X_1` = mole fraction of component