Homework 6 (1) - Name: Student number: PGE 312 Physical and...

Name:
Student number:
PGE 312
Physical and Chemical Behavior of Fluids
Spring 2015
Homework 6
Due Friday, March 6, 2015 by 1:00 PM (end of class)
1. Water and air (initially containing no water vapor) are placed in a closed container at 100°F.
What is the mass of water that will evaporate at equilibrium at a pressure of 30 psi? What about
at 1200 psi? The vapor pressure at this temperature is 0.95051 psi. You can make several
simplifying assumptions: (1) no air dissolves in the water, (2) there is sufficient liquid water in the
container that not all of it will evaporate, (3) the volume of the vapor phase is 3 ft
3
, (4) the
pressure is constant as the water evaporates (in reality, pressure would increase slightly), and