Question

Which of the following aqueous solutions will have the lowest vapor pressure at 25°C?

A. 1.5 M C6H12O6
B. 1.5 M LiNO3
C. 1.0 M Al2O3
D. 1.0 M CaF2

Answer 1

The answer is "D" Because Raoult's law, is that Vapor pressure is directly proportional to the mole fraction of the solution. So 1.0M CaF2 will be the least in this case.

Hope this help please let me know id it was correct

Answer 2

C. 1.0 M Al2O3 would be the best answer