A mixture is prepared by mixing 100.0 grams of ethanol (C₂H₆O) with 30.0 grams of acetone (C₃H₆O). At 25°C the vapor pressures of pure ethanol and acetone are 59 Torr and 231 Torr respectively. What will be the total vapor pressure over the mixture at this temperature?

Question

Quizplus · Accepted Answer

The total vapor pressure is calculated using Raoult's Law. First, calculate the mole fraction of each component. Then, use the mole fractions and the vapor pressures of the pure components to find the partial pressures, and sum them to get the total vapor pressure.

A Mixture Is Prepared by Mixing 100