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Abbreviated
list of quantities, units and symbols in physical chemistry
4.4 physical quantities:
chemical kinetics
Physical Quantity |
Symbol |
SI Unit |
rate of conversion |
x |
mol s-1 |
rate of concentration change of substance B
(through chemical reaction) |
vB,
rB |
mol m-3 s-1 |
rate of reaction |
v |
mol m-3 s-1 |
overall order of reaction |
n |
1 |
rate constant, rate coefficient |
k |
(m3 mol-1)n-1
s-1 |
half life |
t1/2 |
s |
pre-exponential factor |
A |
(m3 mol-1)n-1
s-1 |
energy of activation |
E, Ea |
J mol-1 |
Gibbs energy of activation |
D�G |
J mol-1 |
collision cross section |
s |
m2 |
collision frequency(of A with A) |
zA (A) |
s-1 |
collision frequency factor |
zAB |
m3 mol-1 s-1 |
quantum yield, photochemical yield |
f, F |
1 |
Page last modified 29 May 2000.
Copyright © 2000 International Union of Pure and Applied Chemistry.
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