What does Le Chatelier's principle predict when a system at equilibrium is stressed by adding more reactant?
- A. The equilibrium shifts toward the products ✓
- B. The equilibrium shifts toward the reactants
- C. The equilibrium constant increases
- D. The reaction stops entirely
Correct answer
A. The equilibrium shifts toward the products
Explanation
Le Chatelier's principle states that a system at equilibrium will shift to counteract an applied stress — adding reactant shifts the equilibrium toward products to consume the excess.
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