CHE 119 Study Guide - Midterm Guide: Haber Process, Chemical Equilibrium, Equilibrium Constant
15 Aug 2019
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Chemical equilibrium occurs when the rate of the forward reaction equals the rate of the reverse reaction. A mixture of reactants and products in which the concentrations no longer change with time. Ex: the haber process for production of fertilizers. The equilibrium constant expression depends only on its stoichiometry, not on its mechanism. The equilibrium constant expression (and therefore the value of. ) for a reaction written in one direction is the reciprocal for the reverse reaction. Whenever a pure solid or a pure liquid is involved in a heterogeneous equilibrium, its concentration is not included in the equilibrium constant expression. If a chemical system is already at equilibrium and the concentration of either the products or reactants is increased, the system reacts to consume some of that substance. If the concentration is decreased, the system reacts to produce some of that substance.
