reversible reactions and equilibrium

reversible reaction

reaction in which products can be changed back to reactants by reversing the conditions

equilibrium reaction

reaction that does not go to completion and in which reactants and products are present in fixed concentration ratios

characteristics of equilibriums

dynamic…forward and backward reactions have the same rate…concentrations remain constant…requires a closed system

dynamic equilibrium

reactants are being converted to products at the same rate as the opposite reaction

closed system

a system in which matter is not lost or gained

position of equilibrium

relative amounts of products and reactants present in an equilibrium mixture

Le Chatelier’s principle

if one or more factors that affect dynamic equilibrium is changged, the reaction moves so as to oppose the change