equilibrium position

• What happens when the temperature of a reaction at equilibrium is changed?

  The system reacts to restore equilibrium
• What direction does the equilibrium shift when temperature decreases?

  It shifts in the exothermic direction
• What is the effect of decreasing temperature on products of reactions?

  Increases products of exothermic reaction
• What happens to the position of equilibrium when temperature increases?

  It shifts in the endothermic direction
• What is the effect of increasing temperature on products of reactions?

  Increases products of endothermic reaction
• Which reactions are affected by changes in pressure?

  Reactions involving gases
• What happens to equilibrium when pressure is increased?

  It shifts to favour fewer gas molecules
• What is the effect of decreasing pressure on the position of equilibrium?

  It shifts towards more gas molecules
• What happens when the concentration of a reactant is increased?

  It shifts towards the products
• What is the effect of increasing the concentration of a product?

  It shifts towards the reactants
• What are the effects of temperature changes on equilibrium?

  • Decrease temperature: shifts to exothermic direction
  • Increase temperature: shifts to endothermic direction
• What are the effects of pressure changes on equilibrium?

  • Increase pressure: shifts to fewer gas molecules
  • Decrease pressure: shifts to more gas molecules
• What are the effects of concentration changes on equilibrium?

  • Increase reactant concentration: shifts to products
  • Increase product concentration: shifts to reactants