Right or left equilibrium

• The position of equilibrium can be on the right or on the left
• When a reaction is at equilibrium it doesn't mean the amounts of reactants and products are equal
• If the equilibrium lies to the right, the concentration of products is greater than of the reactants
• If the equilibrium lies to the left, the concentration of reactants is greater than that of the products
• Equilibrium depends on temperature - e.g ammonium chloride ⇌ ammonia + hydrogen chloride

  Heating this reaction moves the equilibrium to the right (more ammonia and hydrogen chloride) and colling it moves it to the left (more ammonium chloride)
• Equilibrium depends on pressure (this only affects equilibria involving gases)
• Equilibrium depends on the concentration of the reactants and products