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Phenol associates in benzene to a certain extent to form a dimer. A solution containing 20 g of phenol in 1.0 kg of benzene has its freezing point lowered by 0.69 K. Calculate the fraction of phenol that has dimerised [Given $K_f$ for benzene = 5.1 $Km^{−1}$]

1 Answer

73%
Hence (A) is the correct answer.
answered Jun 13, 2014 by sreemathi.v
 

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