Answer: Oppose the change.
- A Maintain the stress
- B Increase the stress
- C Oppose the change
- D Stop the reaction
Correct answer: C. Oppose the change
Explanation: When a stress is applied, the equilibrium shifts to partially oppose and relieve that stress.
As the reaction proceeds, reactant concentration falls and product concentration rises until both level off at equilibrium.
Concept context
When forward and reverse reaction rates are equal, equilibrium is reached. Learn about Kc, Kp, Le Chatelier's principle, and acid-base equilibria, including pH, buffer solutions, and solubility product.