Vapour pressure of solution containing 2 mol of liquid A (P_A^@ = 80 t – InterviewSolution

1.	Vapour pressure of solution containing 2 mol of liquid A (P_A^@ = 80 torr) and 3 mol of liquid B (P_B^@= 100 torr) is 87 torr. We canconclude that
Answer» there is negative deviation from RAOULT's law boiling POINT is higher than that EXPECTED for ideal solution molecular attractions between unlike molecules arestronger than those between like molecules all of these statements are correct Solution :For ideal solution vapour pressure of solution `=P_A^@x_A + P_B^@x_B` `80xx2/5 + 100 xx3/5 = 92` torr Since observed vapour pressure of solution >ideal vapour pressure, the solution shows negative deviation.

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