21
Laboratory Teaching Exercises
Index to Exercises
Exercise A - To find the reaction rate constant in a Continuous Stirred Tank Reactor
Exercise B - To determine the effect of inadequate mixing on the reaction rate
Exercise C - Determination of the Residence Time using tracer techniques
Nomenclature
Symbol
Name
Unit
a
sodium hydroxide conc. in feed vessel
(mol/dm
3
)
a
o
sodium hydroxide conc. in mixed feed
(mol/dm
3
)
a
1
sodium hydroxide conc. in reactor at time t
(mol/dm
3
)
sodium hydroxide conc. in reactor after time (mol/dm
3
)
b
ethyl acetate conc.
(mol/dm
3
)
(same subscripts as above for a)
c
sodium acetate conc.
(mol/dm
3
)
(same subscripts as above for a)
F
total volume feed rate
(dm
3
/s)
F
a
volumetric feed rate of sodium hydroxide
(dm
3
/s)
F
b
volumetric feed rate of ethyl acetate
(dm
3
/s)
k
specific rate constant
r
reaction rate
t
R
residence time (s)
t
elapsed time (s)
T reactor
temperature
(K)
V
volume of reactor
(dm
3
)
X
a
conversion of sodium hydroxide =
