question_answer

Acetic acid dissolved in benzene shows molecular weight

A)  \[60\]                                  

B)  \[120\]

C)  \[180\]                                

D)  \[240\]

Correct Answer: B

Solution :

Acetic acid when dissolved in benzene exist as doubly associated molecules in benzene due to hydrogen bonding.                 As a result, the experimentally observed value of the colligative properties is lower and the molecular mass is double than the expected value.