Chapter 12, Problem 78RQ

The vapor pressure of pure methanol, ${\text{CH}}_{\text{3}}\text{OH}$, at $\text{33 °C}$ is 164 torr. How many grams of the nonvolatile solute glycerol, ${\text{C}}_{\text{3}}{\text{H}}_{\text{5}}{\left(\text{OH}\right)}_{\text{3}}\text{,}$ must be added to 105 g of methanol to obtain a solution with a vapor pressure of 145 torr?