Phenol dimerises in benzene and has a van't Hoff factor of 0.54 . The degree of association of pheno

Question

Phenol dimerises in benzene and has a van't Hoff factor of 0.54 . The degree of association of phenol in benzene is

Professor PC Thomas Classes · Answer

$2 C_{6} H_{6} O \leftrightharpoons\left(C_{6} H_{6} O\right)_{2}$ 1- $\alpha$ $\frac{\alpha}{2}$ $i=1-\alpha+\frac{\alpha}{2}=1-\frac{\alpha}{2}$ $1-\frac{\alpha}{2}=0.54$ $\frac{\alpha}{2}=1-0.54=0.46$ Hence $\alpha=0.92$