question_answer

When acetic acid is dissolved in benzene its molecular mass [AFMC 1991]

A)                 Decreases

B)                 Increases

C)                 Either increases or decreases

D)                 Suffers no change

Correct Answer: B

Solution :

           Molecular Mass increases due to dimer formation  \[C{{H}_{3}}COOH\to C{{H}_{3}}-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-OH\to \] Dimer is formed