The vapour pressures of pure liquids A, B and C are 75, 22 and 10 torr, respectively. Which of the f — Solutions and Colligative Properties Chemistry Question

💡 Solution & Explanation

For ideal equimolar solutions, the total vapour pressure is the average of the pure vapour pressures. Binary solution A+B: $(75 + 22)/2 = 48.5$ torr. Binary solution B+C: $(22 + 10)/2 = 16$ torr. Binary solution A+C: $(75 + 10)/2 = 42.5$ torr. Ternary solution A+B+C: $(75 + 22 + 10)/3 = 107/3 = 35.667 \approx 35.67$ torr. Thus, 35.67, 48.5, and 16 torr are possible. Therefore, correct answer is B,C,D.