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

Respuesta :

C. 1.0 M Al2O3 would be the best answer

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.

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