Which one of the following statements is false?

Two sucrose solutions of same molality prepared in different solvents will have the same freezing point depression.

Raoult's law states that the vapour pressure of a component over a solution is proportional to its mole fraction.

The correct order of osmotic pressure for 0.01 M aqueous solution of each compound is ${\mathrm{BaCl}}_2>\mathrm{KCl}>{\mathrm{CH}}_3\mathrm{COOH}>$sucrose.

The osmotic pressure ($\mathrm{\Pi }$) of a solution is given by the equation $\mathrm{\Pi }=\mathrm{MRT}$ where M is the molarity of the solution.