MHT CET 2023 Chemistry question

Identify the false statement about ideal solution from following.

(A)Ideal solutions obey Raoul's law over entire range of concentration
(B)No heat is evolved or absorbed when two components forming an ideal solutions are mixed
(C)Volume of ideal solution is same as sum of volumes of two components taken or mixing
(D)The vapour pressure of ideal solutions is either higher or lower than vapour pressure of pure componentsCorrect

Answer: (D)

Solution

An ideal solution obeys Raoult's law at all concentrations (a: true), has so no heat is evolved or absorbed (b: true), and has so the volume is the sum of the component volumes (c: true). Its total vapour pressure lies between the vapour

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Question ID VK-096382