ChE 344 Summer 2005
Final Exam
Open Book/Notes, Closed Neighbors. Each question 20 points, 100 points total
1. Examine the Pxy and the Txy diagrams carefully and answer the following questions
(a) At a pressure of 1.0 atm and a temperature of 56o C, write
ChE 344 Spring 2006
Final Exam
Open Book/Notes, Closed Neighbors. 100 points total
1. (20 points) An ideal gas is compressed adiabatically from an initial state of 75 o C and
1 atm to 150 o C, then cooled to 75 o C at constant pressure and then expanded i
ChE 344 Spring 2005
Final Exam - Encore
Open Book/Notes, Closed Neighbors. Each question 20 points, 100 points total
1. The vapor pressure of a particular organic compound is measured at two temperatures and is given
below:
Temperature (o C)
7.6
15.4
Vapo
ChE 344 Summer 2005
Exam III
Closed Book, Closed Notes, Closed Neighbors
Be specic. Be clear. Be neat. DO BOTH QUESTIONS. 20 points each
1. Consider a binary system that conforms closely to Raoults Law. The Txy diagram at
a total pressure of 1.0 atm and t
ChE 344 Spring 2006
Exam II (selected from these questions)
You will have to prove these equalities. Closed Book, Notes and Neighbors
1. Prove the following starting from rst principles and denitions
dU
dH
dG
dA
=
=
=
=
T dS P dV
T dS + V dP
V dP SdT
P dV
ChE 344 Spring 2006
Exam II Part A
Open Book, Notes, Closed Neighbors
1. (25 points) A substance X is to be heated from 20o C where it is a solid to 370o C where it
is a vapor. Calculate the enthalpy change in Joules/kg for this operation. The molecular
w
ChE 344 Summer 2006
Exam II (selected from these questions)
You will have to prove these equalities. Closed Book, Notes and Neighbors
Please note that there may be simpler and shorter routes to the solution - if so, feel free to do so. In addition, not al
ChE 344 Summer 2005
Exam I
Closed Book, Closed Notes (except that 1 page), Closed Neighbors
1. High pressure gas expands in a cylinder by pushing back a frictionless piston with
connecting shaft (look at the gure) thus doing work on the shaft and the atmo
ChE 344 Spring 2005
Exam I
Open Book, Open Notes, Closed Neighbors
Read First. Read Carefully. Read it Again
1. Consider the following reaction
A + B 2R
(1)
At 25o C (standard condition), the enthalpy change due to the reaction is -50,000 Joules.
Between
ChE 344 Spring 2006
Exam I
Open Book, Open Notes, Closed Neighbors
1. (20 points) A mole of an ideal gas is at an initial temperature of 600 K and at 8.0 atm
pressure. The gas is subjected to a process that takes it to a pressure of 1.0 atm and
the nal te