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Chemical equilibrium quiz

This 11th-grade chemistry quiz helps students practice identifying concepts related to chemical equilibrium through multiple-choice and short-answer questions, focusing on dynamic equilibrium, equilibrium constant, and Le Chatelier's principle. Students analyze reaction statements and predict shifts in equilibrium based on different changes.

By Edform · Chemistry · Grade 11 · Published Oct 15, 2026 · New

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Questions

  1. Which statement best describes a system at dynamic equilibrium?
  2. Which of the following changes will shift the equilibrium position of the reaction N₂(g) + 3H₂(g) ⇌ 2NH₃(g) to the right?
  3. At equilibrium, the concentrations of reactants and products do not change over time.
  4. What is the term for the constant that expresses the ratio of product concentrations to reactant concentrations at equilibrium?
  5. For the reaction 2SO₂(g) + O₂(g) ⇌ 2SO₃(g), what happens to the equilibrium if more SO₂ is added?
  6. Given the reaction H₂(g) + I₂(g) ⇌ 2HI(g), if [H₂] = 0.5 M, [I₂] = 0.5 M, and [HI] = 1.0 M at equilibrium, what is the value of Kc?
  7. A catalyst increases the value of the equilibrium constant for a reaction.
  8. Which of the following are true about Le Chatelier's principle?
  9. If the equilibrium constant Kc for a reaction is much less than 1, what does this indicate?
  10. Name the principle that states a system at equilibrium will adjust to counteract a change in conditions.

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