Non-ideal solution and vapour pressure

[sgstudent]

When there is a positive or negative deviation it is due to the interactions between A-A and B-B being weaker or stronger than the interactions between A-B. However, are there any scenarios where the interactions between A-A are stronger than A-B while B-B weaker than A-A or vice versa?

In such a case would it be possible that the overall total vapour pressure of the solution to look like an ideal solution but the individual vapour pressure of A and B having positive and negative deviations?

 

[Bystander]

Yes, and yes.

 

[kayan]

Interesting idea, hadn't thought of this question before.

 

[sgstudent]

Yes, and yes.

Hmm in such a case what would the solution be classified as? Because it shouldn't be an ideal solution still right?