will mixing water with isopropyl alcohol give a different heat of vaporization than just isopropyl alcohol?

Question

 will mixing water with isopropyl alcohol give a different heat of vaporization than just isopropyl alcohol's heat of vaporization?

Answer 1

Yes, it will.  The mixture will have a different boiling point than either pure isopropyl alcohol or pure water.  Thus, the heat of vaporization will be different than for the pure substance.