1
Q
define rate constant
A
the rate constant is the constant of proportionality relating the rate of reaction with the reactants as they appear in the rate expression
2
Q
define activation energy
A
the activation energy is the minimum energy which the reactants must possess before a collision will result in a reaction
3
Q
catalyst
A
alter the rate of reaction by providing an alternate reaction route with a lower activation energy, without overall chemically changed by the reaction
4
Q
molecularity
A
the number of reactant particles taking part in an elementary step (rate determining step)
5
Q
rate determining step
A
the slowest step in the reaction
IB Chemistry
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