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Reaction rate

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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