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Order of reactants

Posted: Wed Mar 07, 2018 9:47 pm
by Wayland Leung
What is useful about knowing the order of the reactants?

Re: Order of reactants  [ENDORSED]

Posted: Wed Mar 07, 2018 10:10 pm
by Chem_Mod
Knowing the order allows you to define a rate law for a reaction. When integrated, a differential rate law will allow you to predict how concentrations change with time.

If the reaction is elementary, then the order of a reactant is simply the stoichiometric coefficient of the reactant.

If the reaction is not elementary, the orders must be deduced from a series of experiments and will not match the stiochiometric coefficients.