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प्रश्न
What will be the value of Van’t Hoff factor (i) of benzoic acid if it dimerises in aqueous solution? How will the experimental molecular weight vary as compared to the normal molecular weight?
लघु उत्तरीय
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उत्तर
If benzoic acid dimerises in an aqueous solution, the Van’t Hoff factor (i) will be less than 1, specifically:
`i = "Number of particles after association"/"Initial number of particles"`
`i = 1/2`
i = 0.5
The experimental molecular weight will be almost double the normal molecular weight.
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