
(K, K
eq) equilibrium constant expression; law of mass action. Compare with reaction quotient. The product of the concentrations of the products, divided by the product of the concentrations of the reactants, for a chemical reaction at equilibrium. For example, the equilibrium constant for A + B = C + D is equal to [C][D] / ([A][B]), wher...
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The equilibrium constant of a chemical reaction is the value of the reaction quotient when the reaction has reached equilibrium. At any given temperature, the equilibrium constant has a value which is independent of the initial and actual concentrations of the reactant and product species. For a given set of initial concentrations, the equilibrium...
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http://en.wikipedia.org/wiki/Equilibrium_constant

(from the article `acid–base reaction`) ...they must be present in equal concentrations to preserve electrical neutrality. The equilibrium involved, therefore, is as follows: 2SH SH2+ + S. ... ...is equalled by that of the reverse reaction. For the ion-exchange processes indicated above, the following equations demonstrate the rel...
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Value that expresses how far the reaction proceeds before reaching equilibrium. A small number means that the equilibrium is towards the reactants side while a large number means that the equilibrium is towards the products side.
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http://www.chemicalglossary.net/definition/724-Equilibrium_Constant

A quantity that characterizes the position of equilibrium for a reversible reaction; its magnitude is equal to the mass action expression at equilibrium. K varies with temperature.
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The Equilibrium Constant, K
c, relates to a chemical reaction at equilibrium. It can be calculated if the equilibrium concentration of each reactant and product in a reaction at equilibrium is known. The equilibrium expression below, formed from the general chemical equilibrium, is universally true. The chemical components happen to be ga...
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A quantity that characterizes the position of equilibrium for a reversible reaction, its magnitude is equal to the mass action expression at equilibrium. K varies with temperature.
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<chemistry> The ratio of the reverse and forward rate constants for a reaction of the type: ... A + B = AB ... at equilibrium the equilibrium constant (K) equals the product of the concentrations of reactants divided by the concentration of product and has dimensions of concentration. ... Kd = (concentration A.concentration B) / (concentratio...
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(= equilibrium dissociation constant; dissociation constant) The ratio of the reverse and forward rate constants for a reaction of the type A + B = AB. At equilibrium the equilibrium constant (K) equals the product of the concentrations of reactants divided by the concentration of product, and has dimensions of concentration. K = (concentration A.concentration B)/(concentration AB) . The affinity (association) constant is the reciprocal of the equilibrium constant.
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(Keq) Type: Term Definitions: 1. in the reaction A + B ⇄ C + D at equilibrium (no net change in concentrations of A, B, C, or D), the concentrations of the four components are related by the equation K
eq = [C][D]/[A][B]; K
eq is the equilibrium constant If any ...
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Value that expresses how far the reaction proceeds before reaching equilibrium. A small number means that the equilibrium is towards the reactants side while a large number means that the equilibrium is towards the products side.
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[
n] - (chemistry) the ratio of concentrations when chemical equilibrium is reached in a reversible reaction (when the rate of the forward reaction equals the rate of the reverse reaction)
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Value that expresses how far the reaction proceeds before reaching equilibrium. A small number means that the equilibrium is towards the reactants side while a large number means that the equilibrium is towards the products side. See also: Equilibrium.
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The product of the concentrations (or activities) of the substances produced at equilibrium in a chemical reaction divided by the product of concentrations of the reacting substances, each concentration raised to that power which is the coefficient of the substance in the chemical equation.
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noun (chemistry) the ratio of concentrations when equilibrium is reached in a reversible reaction (when the rate of the forward reaction equals the rate of the reverse reaction)
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