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Phenol associates in water to double mol...

Phenol associates in water to double molecules. The values of observed and calculated molecular weight of phenol are `161.84` and `94` , repectively. The degree of association of phenol will be
a. 60% , b. 84% , c. 45% , d. 80%

Text Solution

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b. `i="Calculated molecular weight"/"Observed molecular weight" =94/161.84=0.58`
`alpha=(1-i)/(1-n)=(1-0.58)/(1-0.5)=0.42/0.5`
`%alpha=0.42/0.5xx100=84%`
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