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KINETIC EQUATION

Kinetic equation states relation of the rate v of chemical reaction on the concentration of the reagents and products. For elementary reactions       v = , where
c_A, c_B, ... are concentrations of reacting substances A, B, ... ;
n_A, n_B, ... are the degrees of order of the reaction to the corresponding agents (as a rule, they coincide with the stoichiometric coefficients of these reagents in the chemical equation)
k is the coefficient of proportionality, the constant of the reaction rate, which depends on the nature of the reacting substances and on the temperature;
v is the reaction rate.
It is usually assumed that v = . Then from the kinetic equation, by solution of the corresponding differential equation, dependence of v and on time t, that is complete kinetic description of the system, can be attained.

For complex reactions a system of kinetic equations, describing single stages, is composed.