The principles of thermodynamics determine the state of chemical
equilibrium for any reaction.
The equilibrium constant expression of elementary chemistry is equal to a
constant at constant temperature when it is expressed in terms of
activities.
The principle of Le Châtelier can predict how a chemical system at
equilibrium responds to changes in temperature, pressure, or amounts of
substances.
The coupling of biochemical reactions can be understood through
thermodynamics and the use of postulated mechanisms.
