Chemical Equilibrium
, Objectives
Discuss the factors that disturb
equilibrium.
Discuss conditions under which reactions
go to completion.
Describe the common-ion effect.
, Predicting the Direction of Shift
Changes in pressure, concentration, or temperature
can alter the equilibrium position and thereby change
the relative amounts of reactants and products.
Le Châtelier’s principle states that if a system at
equilibrium is subjected to a stress, the equilibrium is
shifted in the direction that tends to relieve the stress.
• This principle is true for all dynamic equilibria,
chemical as well as physical.
Changes in pressure, concentration, and temperature
illustrate Le Châtelier’s principle.
, Objectives
Discuss the factors that disturb
equilibrium.
Discuss conditions under which reactions
go to completion.
Describe the common-ion effect.
, Predicting the Direction of Shift
Changes in pressure, concentration, or temperature
can alter the equilibrium position and thereby change
the relative amounts of reactants and products.
Le Châtelier’s principle states that if a system at
equilibrium is subjected to a stress, the equilibrium is
shifted in the direction that tends to relieve the stress.
• This principle is true for all dynamic equilibria,
chemical as well as physical.
Changes in pressure, concentration, and temperature
illustrate Le Châtelier’s principle.
