Raoult's Law and Vapor-Liquid Equilibrium Example Problems

Solve these example problems before watching the solution screencasts.

Example Problem 1

Calculate the bubble temperature at 85 kPa pressure for a binary liquid with 
x 1 = 0.40. The liquid solution is ideal. The saturation pressures are:

Example Problem 2

A vapor at 74℃ containing 70% water and 30% ethanol is to be completely condensed. 
74℃ vapor pressures are:

What is the maximum pressure the compressor must be operated?