Complete the Le Chatelier's principle analysis.
At equilibrium, the ______ of the forward reaction equals the rate of the reverse reaction. Adding more reactant shifts equilibrium ______ to consume the added material. Increasing temperature always favours the ______ direction of the reaction.
Word bank: rate · to the right · endothermic · exothermic
Hints
- Treat added heat as a stress the system will try to absorb.
- The direction that soaks up energy is the one favoured.
Show the answer
At equilibrium, the rate of the forward reaction equals the rate of the reverse reaction. Adding more reactant shifts equilibrium to the right to consume the added material. Increasing temperature always favours the endothermic direction of the reaction.
Increasing temperature adds thermal energy; the system responds by absorbing it, i.e., favouring the endothermic direction.
Practise Integrated chemical reasoning
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