question_answer

The vapour pressure curves of the same solute in the same solvent are shown. The curves are parallel to each other and do not intersect. The concentrations of solutions are in order of:

A) I < II < III

B) I = II = III

C) I > II >III

D) I > III > II

Correct Answer: A

Solution :

[a] Elevation in boiling pointconcentration of a solution. Thus, the order of concentration of solution is I < II < III.