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Questions
What type of deviation is shown by a mixture of ethanol and acetone? Give reason.
What type of deviation from Raoult’s law is shown by ethanol and acetone mixture? Give reason.
Solution 1
Ethanol and acetone show +ve deviation because both are non-polar compounds and after mixing, the force of attraction decreases.
Particle force of attraction > Unlike particle force of attraction
Solution 2
A mixture of ethanol and acetone shows positive deviation from Raoult's Law. Pure ethanol possesses hydrogen bonding. Introduction of acetone between the molecules of ethanol results in breaking of some of these hydrogen bonds. Due to weakening of interactions, the solution shows positive deviation from Raoult’s law.
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