Question

According to Raoult's law, which statement is false?
a. The vapor pressure of a solvent over a solution decreases as its mole fraction increases.
b. The solubility of a gas increases as the temperature decreases.
c. The vapor pressure of a solvent over a solution is less than that of pure solvent.
d. The greater the pressure of a gas over a solution the greater its solubility.
e. Ionic solutes dissociate in solution causing an enhancement of all colligative properties.

Answer 1

Since this is not my area of expertise, I searched Google under the key words "<I>Raoult's law</I>" to get these possible sources:

http://en.wikipedia.org/wiki/Raoult's_law
http://en.wikipedia.org/wiki/Vapor_pressure
http://www.chemguide.co.uk/physical/phaseeqia/raoultnonvol.html
http://www.tannerm.com/raoult.htm

In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.

I hope this helps. Thanks for asking.