Question

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

Answer 1

2.0 M CH4

1.0 M AlCl3

1.0 M NaCl

1.0 M BaCl2

Answer 2

Vapor pressure is inversely related to intermolecular forces. So if you want to find which one will have the greatest vapor pressure, then draw out their molecular shapes (3-D) and then you take the ones with the least intermolecular forces. I hope this helps :)

Answer 3

i think its 1.0 M AlCl3