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In a solvent 50% of benzoic acid dimeri...

In a solvent 50% of benzoic acid dimerises while rest ionises, determine molar mass of acid which is observed and also its van't Hoff factor.

Text Solution

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Let we have 2 moles of benzoic acid
`i=((1+a+na)+(1-a+a/n))/2`
`=(1-1+2+1-1+1/2)/2=1.25`
Molar mass of solute is found to be less than its normal value.
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