Chemical equilibria, Le Chatelier's principle and Kc Key Terms

Dynamic Equilibrium

A state in a closed system where the rates of the forward and reverse reactions are equal, leading to constant concentrations of reactants and products.

Le Chatelier's Principle

A principle stating that if a system at equilibrium is subjected to a change in concentration, temperature, or pressure, the system will adjust to counteract that change.

Equilibrium

A state in a reversible reaction where the rates of the forward and reverse reactions are equal.

Concentration

The amount of a substance in a given volume, often expressed in mol/dm³.

Dynamic Equilibrium

A state of balance in a reversible reaction where the rate of the forward reaction equals the rate of the backward reaction.

Mole Ratio

The ratio of the amounts of reactants and products in a balanced chemical equation.

Exothermic Reaction

A reaction that releases heat to the surroundings, resulting in an increase in temperature of the surroundings.

Dynamic Equilibrium

A state in which the rates of the forward and reverse reactions are equal, leading to constant concentrations of reactants and products.

Catalyst

A substance that increases the rate of a chemical reaction without being consumed in the process.

Equilibrium constant (Kc)

A numerical value that expresses the ratio of the concentrations of products to reactants at equilibrium for a given reaction at a specific temperature.

Equilibrium constant (Kc)

A numerical value that expresses the ratio of the concentrations of products to reactants at equilibrium for a reversible reaction.

Homogeneous equilibrium

An equilibrium in which all reactants and products are in the same phase, typically gaseous or aqueous.

Equilibrium

A state in a reversible reaction where the rates of the forward and reverse reactions are equal, resulting in constant concentrations of reactants and products.

Dynamic equilibrium

A condition in which the concentrations of reactants and products remain constant over time, although both the forward and reverse reactions continue to occur.

Equilibrium constant (Kc)

A numerical value that expresses the ratio of the concentrations of products to reactants at equilibrium for a reversible reaction.

Le Chatelier's principle

A principle stating that if an external change is applied to a system at equilibrium, the system adjusts to minimize that change.

Equilibrium constant (Kc)

A numerical value that expresses the ratio of the concentrations of products to reactants at equilibrium for a given reaction at a specific temperature.

Le Chatelier's principle

A principle stating that if a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium shifts to counteract the change.

Equilibrium

A state in a chemical reaction where the rates of the forward and reverse reactions are equal, resulting in constant concentrations of reactants and products.

Le Chatelier's Principle

A principle stating that if a dynamic equilibrium is disturbed by changing the conditions, the position of equilibrium shifts to counteract the change.