What does Le Chatelier's principle say happens to an equilibrium when temperature is changed or a catalyst is added?

The temperature moves the equilibrium differently depending on if the forwards reaction is exothermic or endothermic. If its endothermic the equilibrium moves to the right giving more products. The addition of a catalyst will only ever increase the rate of reaction and does not change the equilibrium position.

Related Chemistry A Level answers

All answers ▸

The reversible reaction 2 SO2 (g) + O2 (g) <-> 2 SO3 (g) has a delta H value of -197 kJ/mol. Use Le Chatelier's principle to explain what conditions would give the highest equilibrium yield and why industry uses different conditions. (5 marks)


Why do I have to learn about electron shells.


Which liquid would you expect to have a higher boiling point, Bromine (Br2) or Iodine I2)? Explain your answer.


I am struggling to with unseen organic chemistry mechanism. I don’t know where to begin drawing them.