CHEM 135 Chapter Notes - Chapter 14: Dynamic Equilibrium, Equilibrium Constant, Reaction Rate
22 Nov 2018
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Double arrows in an equation: reaction can occur in both directions, can reach chemical equilibrium. Large = high concentration of products, low concentration of reactants (close to equilibrium) Small = low concentration of products, high concentration of reactants (far from equilibrium) Reversible: a reaction that can proceed in both forward and reverse directions. As reactants react, their concentration dec, which dec the rate of the forward reaction. At the same time, as product forms, its concentration inc, and reverse reaction rate inc. Eventually rate of reverse reaction = rate of forward reaction. Dynamic equilibrium for a chemical reaction is the condition in which the rate of the forward reaction equals the rate of the reverse reaction. Both forward and reverse reactions continue to occur, just at the same rate. Concentrations no longer change (not necessarily all equal) Equilibrium constant: lets us quantify the relative concentrations of reactants and products at equilibrium.
