Chemistry II For Dummies
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The equilibrium constant describes the relationship between the amounts of the reactants and the products at a certain temperature. You'll need to know the equilibrium constant as you study Chemistry II. For the general equilibrium:


the equilibrium constant expression is:


In the expression, K is the equilibrium constant, the subscript c indicates this constant is expressed in terms of concentrations (not pressures, p), the brackets (as usual) stand for molar (moles/L) concentration, the uppercase letters are the reactant and product species, and the lowercase superscripts are the coefficients in the balanced chemical equation.

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John T. Moore, EdD, is regents professor of chemistry at Stephen F. Austin State University, where he teaches chemistry and is codirector of the Science, Technology, Engineering, and Mathematics (STEM) Research Center. He is the author of Biochemistry For Dummies and Chemistry For Dummies, 2nd Edition.

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