Lever Rule: ConcepTest and Example Problem

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.

Image for concepTest for Lever Rule Module
Example Problem 1

A liquid with a mole fraction of component 1 of 0.60 is partially evaporated in a piston-cylinder at constant pressure of 3.0 bar. At what temperature is the half the liquid evaporated? What is the composition of the liquid that remains?