33. Which of the following statements regarding Raoult's law are correct?
(A) Raoult's law describes the relationship between the vapor pressure of a solution and the composition of its components.
(B) The vapor pressure of a solution is proportional to the mole fraction of the nonvolatile solute.
(C) The vapor pressure of a solution differs from that of a pure solvent because the presence of solute particles lowers the escaping tendency of solvent molecules.
(D) A solution that obeys Raoult's law is called an ideal solution.
(E) An acetone-water mixture exhibits a positive deviation from Raoult's law.