At a particular temperature, the vapour pressures of two liquids A and B are respectively 120 and 180 mm of Hg respectively. If 2 moles of A and 3 moles of B are mixed to form an ideal solution, the vapour pressure of the solution at the same temperature will be (in mm of Hg) (a)₁₅₆ (b)₁₄₅ (c)₁₅₀ (d)₁₀₈ Ans. (a) Sol. Vapour pressure of solution A B P P o o A A B B 120 2 180 3 P x P x 156mmHg x x