Solution

Raoult's law states that for a solution of volatile liquids the partial vapour pressure of each component is directly proportional to its mole fraction.

Difference:
Ideal solution Non-ideal solution
(i) Obeys Raoult's law over entire range of concentration i.e., $$ P_A = P^{o}_A x_A ; P_B = P^{o}_{B} x_B $$ (i) Does not obeys Raoult's law over entire range of concentration i.e., $$ P_A \neq P^{o}_A x_A ; P_B \neq P^{o}_{B} x_B $$
(ii) $$ \Delta_{mix} H = 0 ; \Delta_{mix} V = 0 $$.
(iii) Does not form azeotrope (iii) Form azeotrope


$$ \Delta_{mix} H = 0 ; \Delta_{mix} V = 0 $$.