What is meant by positive deviations from Raoult's law ? Give an examp – InterviewSolution

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1.	What is meant by positive deviations from Raoult's law ? Give an example. What is the sign of Delta_(mix)Hfor positive deviation ?
Answer» Solution : If the vapour PRESSURE of a solution is higher than what is expected from Raoult.s law, it is called positive DEVIATION from Raoult.s law. A mixture of ETHANOL and acetone SHOWS positive deviation from Raoult.s law.Sign of `Delta_(MIX) H`for such deviation is + ve i.e., it is endothermic.

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