Explain second-order reactions in details

A second-order reaction is a type of chemical reaction that depends on the concentration of two first-order reactants or one second-order reactant. This reaction proceeds at a rate proportional to the product of the concentrations of two reactants and to the square of the concentration of one reactant.


In a second-order reaction, the sum of the exponents in the rate law is equal to two, that is why it is known as the second-order reaction. In many biological reactions, just like the formation of double-stranded DNA from the two complementary strands, this whole process is described by the kinetics known as the second-order kinetics.

There are two most common types of second-order reactions will be described in this section.

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