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How to Solve Homogeneous Equilibrium Problems

By John T. Moore

Part of Chemistry II For Dummies Cheat Sheet

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:

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the equilibrium constant expression is:

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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.