phenol associates in benzene to a certain extent in dimerisation reaction. A solution containing 0.02 kg of phenol in 1.0 kg of benzene has its freezing point depressed 0.69 k Hence degree of dissociation of phenol dimerises will be. [`K_(f)(C_(6)H_(6)) =5.12 k "mol"^(-1)`]
A
0.63
B
0.73
C
0.83
D
0.93
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b
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