Vapor Pressure Lowering
Raoult’s law says: VPcomp = XVPpure
Suppose we have a solution of sucrose in water. The
mole fraction of sucrose is 0.0253 and the temperature is
22.6 oC. What is the vapor pressure lowering caused by
the dissolved sucrose? (sample problem 13.7)
Vapor pressure of water at 22.6oC is 20.565 mmHg.