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In chemistry, Le Chatelier's principle (pronounced UK: / l ə ʃ æ ˈ t ɛ l j eɪ / or US: / ˈ ʃ ɑː t əl j eɪ /) [1] is a principle used to predict the effect of a change in conditions on chemical equilibrium. [2] Other names include Chatelier's principle, Braun–Le Chatelier principle, Le Chatelier–Braun principle or the equilibrium ...
Henry Louis Le Chatelier [1] (French pronunciation: [ɑ̃ʁi lwi lə ʃɑtəlje]; 8 October 1850 – 17 September 1936) was a French chemist of the late 19th and early 20th centuries. He devised Le Chatelier's principle, used by chemists and chemical engineers to predict the effect a changing condition has on a system in chemical equilibrium.
According to Le Chatelier's principle, the addition of acetate ions from sodium acetate will suppress the ionization of acetic acid and shift its equilibrium to the left. Thus the percent dissociation of the acetic acid will decrease, and the pH of the solution will increase.
According to the Le Chatelier's principle, a lower temperature should be used to shift the chemical equilibrium towards the right, hence increasing the percentage yield. However too low of a temperature will lower the formation rate to an uneconomical level.
Le Chatelier can refer to: Alfred Le Chatelier (1855–1929), French soldier, explorer and professor; Bénédicte Le Chatelier (born 1976), French television journalist; Henry Louis Le Chatelier, 19th-century chemist Le Châtelier's principle, named after Henry Louis Le Chatelier; Louis Le Chatelier, 19th-century chemist and industrialist ...
Le Châtelier's principle (1884) predicts the behavior of an equilibrium system when changes to its reaction conditions occur. If a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium moves to partially reverse the change. For example, adding more S (to the chemical reaction above) from the outside will ...
Laplace principle Laplace limit See also: List of things named after Pierre-Simon Laplace: Mathematics Physics Probability Theory Statistical mechanics: Pierre-Simon Laplace: Le Chatelier's principle: Chemistry: Henri Louis le Chatelier: Leibniz's law: Ontology: Gottfried Wilhelm Leibniz: Lenz's law: Physics: Heinrich Lenz: Leonard–Merritt ...
This can be seen as a consequence of Le Chatelier's principle because the inhibitor binds to both the enzyme and the enzyme-substrate complex equally so that the equilibrium is maintained. However, since some enzyme is always inhibited from converting the substrate to product, the effective enzyme concentration is lowered.