A 2B
T= 450 K
P= 10 atm
Hr=1390 cal/gmol at 290 K
And G`= -56 cal/gmol
Heat capacity:
CpA= 20 cal/gmol/K
CpA= 12 cal/gmol/K
Fugacity coefficient:
A=0.97
B=0.49
R= 1.987 cal/gmol K
G = change in Gibbs free energy, H = change in enthalpy, T = absolute
tempe

INTERNAL STUDENTS ONLY.
NAME: ........................................ .... .;.
THIS PAPER MUST
NOT BE REMOVED FROM
THE EXAMINATION ROOM
THE UNIVERSITY OF QUEENSLAND
November 2003
CHEE 3005
REACTION ENGINEERING
Time: TWO (2) hours f

CHEE3005 Tutorial 1
August 3, 2007
1 Consider the gas phase reactions between methyl chloride and
water at 600K and 1 atm. pressure.
1. CH3Cl + H2O
CH3OH + HCl
2.
(CH3)2O + H2O
2CH3OH
The equilibrium constants are K1 = 0.00154 and K2 = 10.6.
Determine the

Question 5.1
From the units of the rate constant (hrs-1) we know that the reaction is 1st order. For a
CSTR with no change in the number of moles (A B) we can write the equations of
the concentration inside the first and second reactors:
C1 =
C0
1 + k1 1

CHEE-3005 Reactions Solutions Exam 2 Oct. 14 2014
Question1.
dN i
0 Fi ,in Fi ,out rV
i
dt
(a)Atsteadystate, 0 vCo vC kCV
C
Co
k
X
1 k
1 k
X
k
0.5
1 k
4 min
4k
0.5 8k 1 4k
1 4k
4k 1 k 0.25min 1
(b)
N C
j
j
pj
T0
dT
dP
F j 0 C pj H A rAV Q V
T
dt
dt

If 2> 1, to maximize B, keep [A] low with inerts
CHEE3005 REACTION ENGINEERING
SECTION 1
Reaction Order Summary
Sensitivity to temperature
Integrated Rate Laws,
,
except n=1,
Half Life,
Single Reaction Equilibrium
, except n=1,
G RT ln K , K e
o
rA rB

If 2> 1, to maximize B, keep [A] low with inerts
CHEE3005 Reaction Engineering
Section 1
Reaction Order Summary
Sensitivity to temperature
Integrated Rate Laws,
,
except n=1,
Half Life,
Single Reaction Equilibrium
, except n=1,
G RT ln K , K e
o
For liq

Problem 6.5
3 CSTRs are used to model a PFTR (correctly we assume):
When n=3 we get X=0.75 for this 1st order reaction when the TOTAL
residence time is :
What is X for the actual PFTR that is being modelled?
First lets determine the value of k from the da

PROBLEMS
SET O
1. Introduction
1.1
The gas phase reaction, A 2B, is maintained at 450 K and 10 atm. The reaction
started with 1 kmol of pure A. The heat of reaction is Hr = 1390 cal/gmol at 290 K,
and Go = -56 cal/gmol. Heat capacities of A and B are 20 a

ASSIGNMENT PROBLEMS
SET H
1. Introduction
1.1
Methanol is synthesized commercially from CO and H2 by the reaction
CO 2H 2 CH 3 OH
over a Cu/ZnO catalyst at ~350 oC at 50-100 atm. The standard state thermodynamic
data at 298.15 K for this reaction are H -9

Problem Set H
Question 1.1
a) CO 2 H 2 CH 3 OH
Assume ideal gas, let A=CO, B=H2, C=CH3OH
yc
P
K eq
( t ) 2 But Pt=1atm
2
y A y B 1atm
yc
K eq
2
y A yB
K eq e G
o
/ RT
e 24.210
3
/(8.314298)
A
1
1 x
1 x
3 2x
Initial (Moles)
Change
Final
Since K eq
17

TUTORIAL - CHEE 3005 (CHEM/MET)
Reaction Kinetics Tutorial
1) For a simple reaction where A in solution is converting to a product, (A Product), derive the integrated rate
equation, determine the linear plot, the slope of the linear plot and the units of

TUTORIAL - CHEE 3005 (CHEM/MET)
Reactor Modelling
1) A reaction has a rate given by rA = 0.005CA2 in mol/cm3.min, if the concentration is to be
expressed in mol/liter and time in hours, what would be the value and units of the rate constant?
0.005 in cm3/

TUTORIAL - CHEE 3005 (CHEM/MET)
Leaching Micromodels
The following data for chalcopyrite (CuFeS 2) oxidative dissolution by oxygen was obtained by pressure leaching a
chalcopyrite concentrate in sulphuric acid solution at pH 2 at 90 oC using different par

TUTORIAL - CHEE 3005 (CHEM/MET)
Heterogeneous (Aqueous) Reaction Thermodynamics (Eh pH)
Q1.
Goethite (FeOOH) is a major component of the limonite fraction of nickel laterite ore.
Nickel is finely distributed throughout the goethite matrix and in order to

CHE
EE-3005 R
Reactions Solution Exam 1 Sept. 9 2014
s
ns
m
(a) E
Endothermi so conversion increa with inc
ic,
ases
crease in tem
mperature. S
Since number of
moles decre
m
eases, conve
ersion increa with in
ases
ncrease in pr
ressure.
Xeq
T
(b)
K
P y AB

TUTORIAL - CHEE 3005 (CHEM/MET)
CSTR Reactor Efficiency
Thus far in the course, we consider CSTRs to be perfectly mixed. The reality is that mixing is never 100% efficient.
The inefficiencies can be modelled by,
1) considering that the effective reactor v

NON-ISOTHERMAL
So
far we have only considered isothermal reactors. In reality, if a
REACTORS
reaction generates (or absorbs) heat, the temperature of the reaction
mixture will change as the reaction proceeds. Thus, no reactor is truly
isothermal, but we h

CHEE 3005
CLASS TEST NO. 1
SEPTEMBER 18 2002
3.00 - 4.30PM
Question 1:
A young engineer claims to have developed an amazing biocatalyst that can synthesis
the compound AB from a mixture of A and B at room temperature. The reaction
involved is
A + B AB
The

CHEE3005 2009 Mid-Semester Exam 1
5 minute perusal (no writing). 90 minute duration. Please complete in answer book.
Exam is worth 15% of final grade and is marked out of 100 and has 3 questions in total.
Q1. The ammonia synthesis reaction
N 2 3H 2 2NH3
h

CHEE-3005 Reactions Solutions Example Mid Sem 1
Question 1.
Py
f AB
y AB
2t AB
f A f B Pt y A y B Pt y A y B
K
Initially, there are 1 mole of A + 1 mole of B,
For 1 mole of A + 1 mole of B, at conversion x:
A = 1-x
B = 1-x
AB = x
Total = 2-x
yA
1 x
x

October 7 & 8, 2015
CHEE3005 Tutorial Sheet 8
Question 1
A new batch of a certain catalyst was measured to have a pore volume of 0.6
cm3/g with pore radius of 40 . A first order reaction AB, when conducted at
500 K with gaseous A at 1 bar, was found to ha

Solutions to Assignment 4
7.1
A batch reactor is to be designed for the second order reaction
A+BC+D
under the following conditions.
Initial charge: A and B each at a concentration of 25 gmole/lit.
Reactor volume: 5,000 lit.
Heat capacity of reaction mixt

Solutions to Assignment 3
A half order liquid phase reaction A 2B, occurs in a CSTR. Find the limits for the
conversion if the feed concentration is 1 mole/lit, residence time is 1 hr, and the rate
constant is 2 mole1/2/lit1/2-hr.
(10 marks)
6.1
Solution

Solutions to Assignment 1
2.1
The gas phase reaction, A 2B, is maintained at 450 K and 10 atm. The reaction
started with 1 kmol of pure A. The heat of reaction is HR = 1390 cal/gmol at 290 K, and
Go = -56 cal/gmol. Heat capacities of A and B are 20 and 12

September 2 & 3, 2015
CHEE3005 Tutorial Sheet 5
Question 1.
The half-order liquid phase reaction AB has rate constant k = 6 moles1/2/lit1/2hr, and is conducted in a reactor sequence comprising of a CSTR and PFTR.
The feed to the reactor system has a total

Aug 12, 13, 2015
Tutorial Sheet 3: Solution
Question 1
Let us consider the kinetics of beer making. This involves fermentation of a
carbohydrate using an enzyme - a high molecular weight (MW > 10,000)
protein-like substance found in microorganisms such as

1
Solutions to Assignment 5
Q 8.3) A first order heterogeneous irreversible reaction is taking place within a
spherical catalyst pellet. The reactant concentration half way between the
surface and centre of the pellet (i.e. r = R/2) is equal to one-tenth

CHEE3005 2010 Mid-Semester Exam 1
5 minute perusal (no writing). 90 minute duration. Please complete in answer book.
Exam is worth 15% of nal grade, has 3 questions in total and is marked out of l 00.
Q1 (25 marks) Dimethyl ether is formed from methanol