Phenol (mol.wt.`94`) is dimerised to `60%` in a solvent, the observed molecular weight of phenol will be:

Benzoinc acid dimerises and its observed molecular wt. becomes 152.5, its van't Hoff factor will be

Benzoic acid dimerises and its observed molecular wt. becomes 152.5, its van't Hoff factor will be

In certain solvent, phenol dimerizes to the extent of 60%. Its observed molecular mass in that solvent should be

In certain solvent, phenol dimerizes to the extent of 60%. Its observed molecular mass in that solvent should be