JEE Main Chemistry question

When the vapour pressure of solutions of two liquids is less than those expected from ideal solutions, they are said to show:

(A)Positive deviations from ideal behaviour
(B)Negative deviations from ideal behaviourCorrect
(C)Positive deviations for lower concentrations and negative deviations for higher concentration
(D)None of the above

Answer: (B)

Solution

A vapour pressure lower than the ideal (Raoult's law) prediction is, by

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Question ID VK-143379