Question

The vapor pressure of a dilute solution of a non-volatile solute and the vapor pressure of the pure solvent at the same temperature are P and P*, respectively. $\frac{P^*-P}{P^*}$ is equal to
(Assume that the vapor phase behaves as an ideal gas)

• A. molality of the solution
• B. mole fraction of the solvent
• C. weight fraction of the solute
• D. mole fraction of the solute

Answer 1

Answer: (D)

mole fraction of the solute

Answer 2

The correct option is (D): mole fraction of the solute