Equilibrium Constant (Keq)

Definition

This number expresses the relationship between concentrations of products and reactants at equilibrium for a particular reaction at constant temperature.

Related terms

Le Chatelier's Principle: A principle stating that if a change in conditions is imposed on a system at equilibrium, the system will adjust itself to partially counteract the change.

Reaction Quotient (Q):

A measure similar to Keq but for non-equilibrium conditions. It helps predict which direction a reaction will proceed to reach equilibrium.

Chemical Equilibrium:

The state where concentrations of reactants and products remain constant over time because their rates of reaction are equal.