CHEM 104 Lecture Notes - Lecture 14: Reaction Quotient, Equilibrium Constant
Document Summary
Most commonly done by allowing a system to reach equilibrium and then measuring the equilibrium concentration of one or more of the reactants or products. Steps: write the balanced equation for the equilibrium reaction. From it derive the equilibrium constant expression: set up a table containing initial concentration and equilibrium concentration for each into this reaction table. substance included in the equilibrium constant expression. Enter all known information stoichiometric coefficients in the balanced equilibrium equation to calculate the other: use to represent the change in concentration of one substance. Use the changes in terms of . concentrations in terms of and enter them in the table: use the simplest possible equation to solve for . Then, use to calculate the unknown: from initial concentrations and the changes in concentrations, calculate the equilibrium you were asked to find, check your result to make certain it is reasonable. Because equilibrium constants have numeric values, they can be used to predict quantitatively.
