In chemistry, the K value refers to the equilibrium constant, which expresses the ratio of concentrations of products to reactants at equilibrium.
The state where both reactants and products are present in concentrations which have no further tendency to change with time.
The ratio of product concentrations to reactant concentrations at any point in time during a reaction.
This principle states that if a dynamic equilibrium is disturbed by changing conditions, the system responds by re-establishing the equilibrium via counteracting changes.