Which of the following formulas represents Raoult's law for a solution containing non-volatile solute?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → $P_{\text{Total}} = P^\circ_{\text{solvent}} \cdot \chi_{\text{solvent}}$ ##
According to Raoult's law, the vapour pressure of a solution of a non-volatile solute is equal to the vapour pressure of the pure solvent at that temperature multiplied by its mole fraction.