JEE Main 2009 Chemistry question

A binary liquid solution is prepared by mixing n-heptane and ethanol. Which one of the following statements is correct regarding the behaviour of the solution?

(1)The solution formed is an ideal solution
(2)The solution is non-ideal, showing +ve deviation from Raoult's law.Correct
(3)The solution is non-ideal, showing -ve deviation from Raoult's law.
(4)n-heptane shows +ve deviation while ethanol shows -ve deviation from Raoult's law.

Answer: (2)

Solution

n-Heptane molecules break up the hydrogen bonding between ethanol molecules; the heptane–ethanol interactions are

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Question ID VK-039155