Question

reasons for negative deviation shown by mixture of acetone and chloroform

Answer 1

the reasons for -ve deviation are:

1) A-A and B-B interaction(inter molecular force) is lesser than A-B interactions , where A can be acetone and B can be chloroform or vice versa...which leads to decrease in vapour pressure

2)ΔV = -ve

3)ΔH= +ve