1. 31. Chemical Equilibrium L2Key Concepts for Chemical Equilibrium: 1. Definition of Le Chaterlier’s Principle 2. Concentration Changes POE shifts right/ left to remove/ replenish some of the added/ removed species. Kc remains constant 3. Pressure or Volume Changes POE shifts right/ left, favouring the side with more/ less amount of gases to increase/ decrease pressure. Kc remains constant 4. Temperature Changes POE shifts right/ left, favouring the endothermic/ exothermic reaction to decrease/ increase temperature. Kc increases/ decreases. 5. Effect of Catalyst Increases the forward and backward reaction by the same extent. Does not affect POE or product yield. Kc remains constant 6. Haber Process as a case study to balance the yield, rate and cost for optimal conditions.