According to Raoult's law applied to colligative properties, the exact relative lowering of vapour p — Solutions and Colligative Properties Chemistry Question

💡 Solution & Explanation

Raoult's law dictates that the relative lowering of vapour pressure ($\frac{P^0 - P_s}{P^0}$) is directly defined as the mole fraction of the non-volatile solute ($\chi_{solute}$) in the solution. This is a fundamental definition for colligative properties.