Phenol dimerised to 60% in a solvent. The obs | vedclass

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(B) The molar mass of phenol $(C_6H_5OH)$ is $M_{Theo} = 94 \ g/mol$.For dimerization,$n = 2$ and the degree of association $\alpha = 0.60$.The van't

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$134.2$

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(B) The molar mass of phenol $(C_6H_5OH)$ is $M_{Theo} = 94 \ g/mol$.For dimerization,$n = 2$ and the degree of association $\alpha = 0.60$.The van't Hoff factor $i$ is given by $i = 1 - \alpha + \frac{\alpha}{n} = 1 - 0.60 + \frac{0.60}{2} = 0.4 + 0.3 = 0.7$.The relation between observed and theoretical molecular weight is $M_{Obs} = \frac{M_{Theo}}{i}$.$M_{Obs} = \frac{94}{0.7} \approx 134.28 \ g/mol$.

Phenol dimerised to $60\%$ in a solvent. The observed molecular weight of phenol will be

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