1. The problem statement, all variables and given/known data Calculate the vapor pressure above liquid ethanol at 35 degrees C. The density of liquid ethanol at this temperature is 0.7767 kg/dm^3 and the true vapor pressure is 100 torr. 2. Relevant equations K=P'/P , P'=vapor pressure, P=total pressure Antoine Equation: log P= A-B/(C+T) Raoult's Law: P*=xP, P*=partial pressure, P=Total Pressure 3. The attempt at a solution ?? What is the difference between true vapor pressure and vapor pressure??