Answer
The boiling point of a solution containing a non-volatile solute is higher than that of a solution containing a volatile solute because the normal boiling point of a solute is the temperature when the vapor pressure of a solute equals 1 atm. By adding a non-volatile solute to the liquid reduces the vapor pressure of the liquid a higher temperature must be required to achieve 1 atm vapor pressure.
Work Step by Step
The boiling point of a solution containing a non-volatile solute is higher than that of a solution containing a volatile solute because the normal boiling point of a solute is the temperature when the vapor pressure of a solute equals 1 atm. By adding a non-volatile solute to the liquid reduces the vapor pressure of the liquid a higher temperature must be required to achieve 1 atm vapor pressure.
