Question

 A solution is prepared by mixing 50ml of chloroform and 50ml of acetone. 

The volume of the resulting solution will be 100 ml or less than 100ml or more than 100 ml?

Answer 1

When chloroform and acetone are mixed they exhibit negative deviation from ideal behavior because intermolecular hydrogen bonds are formed between molecules of acetone and chloroform. Since the hydrogen bonds are comparatively stronger forces of attraction, the volume of the solution decreases. Therefore, the volume of the resulting solution will be less than 100ml.