#### Flash Separations: ConcepTests

Try to answer this ConcepTest and solve the example problem before using this module. Studies show that trying to answer the questions before studying material improves learning and retention. We suggest that you write down the reasons for your answers. By the end of this module, you should be able to answer these on your own. Answers will be given at the end of this module.

# Example Problem 1

A 50/50 binary liquid mixture of benzene(1) and toluene(2) is flashed to 1.4-bar pressure, and 25% of the liquid vaporizes: $P_1^{sat}\,=\,2.0 \,bar$ What is the composition of the resulting vapor?