![]() In the same way, the rate of backward reaction will be: Mathematical Expression of the Law of Mass ActionĪs per the Law of Mass Action definition, the rate of reaction ‘R’ is given as:įor a general reaction denoted by aA + bB → Products, rate of the reaction according to the Law of Mass Action is indicated as:Īs a result, Rf = Kf Aa Bb, where Kf is the rate constant of the forward reaction. Socio physics is a branch of physics that deals with (social physics) The law of Mass action is also useful in the following areas: When the semiconductor system is in thermal Equilibrium, the law of Mass action gives a link between the concentrations of electron holes and free electrons. ![]() Although this law was beneficial for determining the correct Equilibrium equation for a reaction, the rate expressions it provided are now known to only apply to elementary reactions.Īs this law also applies to semiconductors, it has a number of major consequences in the domains of electronics and semiconductor physics. Guldberg and Peter Waage created this law between 18, although it is now primarily of historical relevance. The rate of each chemical reaction is proportional to the product of the Masses of the reacting substances, each Mass raised to a power equal to the coefficient that occurs in the chemical equation, according to the law of Mass action. ![]() ![]() N is number of electrons in the conduction band Where n i is the intrinsic carrier concentration The law of Mass action asserts that at a constant temperature, the product of the number of electrons in the conduction band and the number of holes in the valence band remains constant, regardless of the quantity of donor and acceptor impurities added. ![]()
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