The
reaction rate of a
chemical reaction, that is, the speed of production of products or
reactants[?], may generally be expressed as rate =
k [a]^
x where [a] is the
molar concentration[?] of reactant (there may be several),
x is the order for that reactant, and
k is a constant. Order establishes the mathematical relation of concentration to rate; eg. for an order of 2, if the concentration doubles, the rate quadruples.
Rate is often expressed in mols per liter-second.
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