question_answer

The volume of the resulting solution obtained by mixing 25 ml of acetone and 25ml of \[CHC{{l}_{3}}\]will be:

A)  50 ml                                   

B)  < 50 ml

C)         > 50 ml                

D)         unpredictable

Correct Answer: B

Solution :

A mixture of chloroform and acetone shows negative deviation from Raoults law, as in this mixture A ... B attraction are greater than A ...A and B ... B attraction due to hydrogen  bonding.  Hence, \[\Delta {{V}_{mixing}}=-\,ve.\] Therefore the volume of resulting solution will be less than 50 ml (< (25 + 25) ml).