reaction order
Quick Summary
In chemistry, the order of a reaction describes how the rate of a chemical reaction is influenced by the concentration of the reacting substances. This is determined by the sum of the exponents of the concentration terms in the reaction rate expression.12
For example, if a reaction's rate is proportional to the concentration of substance A raised to the power of one and substance B raised to the power of one, it is a second-order reaction (first-order in A and first-order in B). The rate can be expressed as v = k[A][B], where k is the rate constant.2
Other orders exist, such as first-order reactions where the rate is proportional to the concentration of one substance (v = k[A]), and zero-order reactions where the rate is constant and independent of concentration. It's important to note that a reaction's kinetics don't always directly match its balanced chemical equation, as reactions can occur in multiple steps.2
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reaction mechanismKinetic orderBecause the possibilities that need to be considered for the transition state have been limited by determination of the chemical structures of the participants, the most powerful method of obtaining further information is the use of the kinetic methodāi.e., the study of theā¦
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The kinetic order of a reaction is best considered as an experimental quantity related to (but not identical with) the number of molecules of any reactant involved in the transition state. It may for various reasons reveal only a part of what isā¦
Read MoreThe kinetic order of a reaction is best considered as an experimental quantity related to (but not identical with) the number of molecules of any reactant involved in the transition state. It may for various reasons reveal only a part of what isā¦
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