KEAM 2019 Physics and Chemistry Paper

Acetic acid dimerizes when dissolved in benzene. As a result boiling point of the solution rises by 0.36°C, when 100 g of benzene is mixed with “X” g of acetic acid. In this solution, if experimentally measured molecular weight of acetic acid is 117.8 and molar elevation constant of benzene is 2.57 K kg mol–1 , what is the weight % and degree of dissociation (in %) of acetic acid in benzene?