chemistry module 5 rates orders and arrhenius
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8 Terms
what are the units for the rate of reaction
mol dm-3 s-1
what does the order of a reactant show
how the concentration of a chemical, typically a reactant, affects the rate of reaction
0 order
Changing the concentration of the chemical has no effect on the rate of the reaction
Therefore, it is not included in the rate equation
1st order
The concentration of the chemical is directly proportional to the rate of reaction, e.g. doubling the concentration of the chemical doubles the rate of reaction
2nd order
The rate is directly proportional to the square of the concentration of that chemical, e.g. doubling the concentration of the chemical increases the rate of reaction by a factor of four
what is the overall order of reaction
the sum of the powers of the reactants in a rate equation
equation for rate
rate = k (a) (b)²