mass action, law of

mass action, law of
Fundamental law of chemical kinetics (the study of rates of chemical reactions), formulated in 1864–79 by the Norwegian scientists Cato M. Guldberg (1836–1902) and Peter Waage (1833–1900).

The law states that the reaction rate of any simple chemical reaction is proportional to the product of the molar concentrations of the reacting substances, each raised to the power corresponding to the number of molecules of that substance in the reaction.

* * *

      law stating that the rate of any chemical reaction is proportional to the product of the masses of the reacting substances, with each mass raised to a power equal to the coefficient that occurs in the chemical equation. This law was formulated over the period 1864–79 by the Norwegian scientists Cato M. Guldberg (Guldberg, Cato Maximilian) and Peter Waage but is now of only historical interest. This law was useful for obtaining the correct equilibrium equation for a reaction, but the rate expressions it provides are now known to apply only to elementary reactions. (See chemical kinetics.)

Keith J. Laidler
 

* * *


Universalium. 2010.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • mass action law — veikiančiųjų masių dėsnis statusas T sritis fizika atitikmenys: angl. mass action law vok. Massenwirkungsgesetz, n rus. закон действующих масс, m pranc. loi d’action de masse, f; loi de Guldberg et Waage, f …   Fizikos terminų žodynas

  • Mass action law (electronics) — For other uses, see Mass action. Under thermal equilibrium the product of the free electron concentration n and the free hole concentration p is equal to a constant equal to the square of intrinsic carrier concentration. The intrinsic carrier… …   Wikipedia

  • mass action law — Chem. See law of mass action. * * * …   Universalium

  • mass action law — Chem. See law of mass action …   Useful english dictionary

  • Mass action — may refer to: Law of mass action, in chemistry, a postulate of reactions Mass action law (electronics), in semiconductor electronics, a relationship between intrinsic and doped carrier concentrations Mass action (sociology), in sociology, a term… …   Wikipedia

  • Law of mass action — For other uses, see Mass action (disambiguation). In Chemistry, the law of mass action is a mathematical model that explains and predicts behaviors of solutions in dynamic equilibrium. It can be described with two aspects: 1) the equilibrium… …   Wikipedia

  • law of mass action — Chem. the statement that the rate of a chemical reaction is proportional to the concentrations of the reacting substances. Also called mass action law. * * * …   Universalium

  • law of mass action — n. the law that the rate of a chemical reaction is directly proportional to the concentrations of the reactants …   English World dictionary

  • law of mass action — n a statement in chemistry: the rate of a chemical reaction is directly proportional to the molecular concentrations of the reacting substances …   Medical dictionary

  • Mass action (sociology) — For other uses, see Mass action (disambiguation). Mass action in sociology refers to the situations where a large number of people behave simultaneously in a similar way but individually and without coordination. For example, at any given moment …   Wikipedia

Share the article and excerpts

Direct link
… Do a right-click on the link above
and select “Copy Link”