Physical Chemistry 3: — Chemical Kinetics — - Christian-Albrechts ...

1.3 Historical events 6
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Empirical rate law:
ln
0
= − (1.16)
Differentiation gives
or
y Empirical rate law:
ln
− ln 0
= − ()=− (1.17)
| {z }
=0
1
= − (1.18)
= − (1.19)
Reaction rate :
≡−
(1.20)
Notice that even though there is one molecule of H 2 O taking part in the reaction, H2 O
does not appear in the rate law, because it is practically constant in the dilute solution.
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Figure 1.2: Milestones in chemical kinetics.