If `P^(@)` and `P_(s)` are vapour pressure of solvent and its solution, respectively, `chi_(1)` and `chi_(2)` are mole fractions of solvent and solute, respectively, then

If P^(@) and P_(S) are the vapour pressure of the solvent and solution respectively, n_(1) and n_(2) are the mole fractions of the solvent and solute respectively, then:

If P_(@) and P_(S) are the vapour pressure of the solvent and its solution respectively and x_(1) and x_(2) are the mole fraction of the solvent and solute respectively, then

If P^(@) and P_(5) are the vapour pressure of the solvent and its solution respectively and x_(1) and x_(2) are the mole fraction of the solvent and solute respectively, then

If p^(@) and p_(a) are the vapour pressures of the solvent and solution respectively and n_(1) and n_(2) are the mole fractions of solvent and solute respectively. Then,