ChE 381
Modified Raoults Law: yiP =
Modified Raoults Law Solution Strategy
xii(xi,T)Pisat(T)
i = function of xi and T
10/16/13
Pisat
= function of T
Scenario (a): Given T and x, find y and P
- Assess
Given: T and x
T (K)
xMeOH
sat
PMeOH
PMAsat
(kPa)
Find: y and P
318
input by user
0.25
44.66636
A
xMA
64.95226 calculated from T
1.10786
0.75 calculated from xMeOH
gMeOH
1.864833
gMA
1.071695
(kPa)
yM
ChE 381
Homework #7
Due at the beginning of class 10/30/13
GROUP:
1. Given the following mixtures of ethane, propane, isobutane, isopentane:
(a) A liquid that is 15% ethane, 15% propane, 30% isobutane
ChE 381 Fall 2013
HW #6
Due 10/23/13
Individual
1. Does an azeotrope exist for methanol and methyl acetate at 95 kPa? If an azeotrope does exist, find
the corresponding composition and temperature at
ChE 381 Fall 2013
HW #6
Due 10/23/13
Group
1. Generate a Pxy diagram for a mixture of methanol (MeOH) and methyl acetate (MA) at 318K and a
Txy diagram at 90kPa (a) assuming ideal behavior and (b) usi