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Q.

Water and ethanol form non-ideal solution with positive deviation from Raoult's law. This solution will have vapour pressure

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a

equal to vapour pressure of pure water

b

less than vapour pressure of pure ethanol

c

more than vapour pressure of pure water

d

less than vapour pressure of pure water

answer is C.

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Detailed Solution

Due to positive deviation from Raoult'slaw, ethanol and water escape easily showing higher vapour pressure than expected value. 

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