JEE Main 2014 Chemistry question

For an ideal solution of two components A & B, which of the following is true?

(1) (zero)
(2)A − B interaction is stronger than A − A & B − B interactions
(3)A − A, B − B & A − B interactions are identicalCorrect
(4) (zero)

Answer: (3)

Solution

An ideal solution obeys Raoult's law over the whole composition range, which requires the A–B interactions to be identical to the A–A and B–B interactions. Then

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Question ID VK-104658