CHEM 112 Lecture Notes - Equilibrium Constant, Spontaneous Process, Closed System
29 Jan 2014
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Document Summary
W13l1 principles of chemical equilibrium: note: most reactions are at equilbrium, q = k not at equilibrium. Even though a reaction is at equilibrium, meaning both a forward and reverse reaction exists, the equilibrium constant will be different if they are written out separately. Reactions can wither appear to go to completion, seem to go partially, or don"t seem to go at all. In each case, equilibrium will eventually be reached (may take a very long time) Homogenous gas phase system all species are at a gaseous phase: heterogeneous mixtures mixtures of solid/gas or solid/aqueous systems where more than one phase is present, reactions involving solutions such as acid/base or redox reactions. Dimensionless ratio referred to a chosen reference state: accounts for non-ideal behavior in solutions and gases, an effective concentration. A large equilibrium constant means the reaction goes to completion, or very close to it.
