Q.

Statement 1: Ethanol and acetone show positive deviation from Raoult's law.
Statement 2: Pure ethanol molecule show hydrogen bond and on adding acetone hydrogen bond between ethanol molecules breaks.
 

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a

Statement 1 is correct statement 2 is incorrect

b

Statement 1 is incorrect statement 2 is correct

c

Both statements 1 and 2 are correct

d

Both statements 1 and 2 are incorrect

answer is A.

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Detailed Solution

Ethanol molecules shows hydrogen bonding. On adding acetone, its molecules get in between the host molecule and break some of hydrogen bonds between them. Due to weakening of interaction the mixture of ethanol and acetone shows the positive deviation from Raoult's law.

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Statement 1: Ethanol and acetone show positive deviation from Raoult's law.Statement 2: Pure ethanol molecule show hydrogen bond and on adding acetone hydrogen bond between ethanol molecules breaks.