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Question

The value of van ’t Hoff factor (i) for a solution of ethanoic acid in benzene is:

A
2
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B
0.5
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C
1
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D
1.5
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Solution

The correct option is B 0.5
In benzene, two molecules of ethanoic acid associate to form a dimer.
2CH3COOH(CH3COOH)2
van't hoff factor i = number of solute particles in solutiontheoritical number of solute particles
i=12=0.5

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