Chemistry 112 – Day 6 (09/16/2019)
Chapter 12 – Kinetics
o
The study of kinetics explores the rate or a reaction
o
How fast does it go?
In contrast to equilibrium which answers how far does it go
o
By looking at how fast a reaction goes and how its rate changes with certain
variables, we can propose rate mechanisms.
Reaction Rate
o
Change in relation to time
o
For chemistry we usually use the change in conc. Of something over a certain
time period.
o
Rates by convention are always expressed as a positive value.
o
4 general factors that we can control to manipulate the rate of a chemical
reaction.
Influencing the Rate
o
Concentration
o
Physical State
o
Temperature
o
Catalysts
Expressing the Rate
o
Reactant concentrations decrease while product concentrations increase
For A
B
o
Rate of reaction = -
Change
∈
concentration of A
Change
∈
Time
= -
conc A
2
−
Conc A
1
t
2
−
t
1
Δ
(
conc A
)
Δt
o
How would you express this in terms of the product?
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- Spring '08
- LEMASTER
- Chemical reaction, Rate equation, 1.000 m, 0.868 M, 10.0 sec, o The study of kinetics
