A solution of 53.6 g of glycerin in 133.7g of ethanol has a vapor pressure of 113 torr at 313K.

A solution of 53.6 g of glycerin in 133.7g of ethanol has a vapor pressure of 113 torr at 313K. Calculate the vapor pressure of pure ethanol assuming that glycerin is a non-volatile, non electrolyte solute in ethanol.