Reversible Reactions Quiz
Studying this course? Keep your progress in one place.
Pick an answer for each. Quizzes never use energy.
5 questions, one answer each
Each answer is checked as you go, with why.
See all 5 questions
1. What symbol shows that a reaction is reversible?
- A. →
- B. ⇌
- C. =
- D.
2. What colour change occurs when hydrated copper sulfate is heated to remove its water?
- A. White to blue
- B. Blue to white
- C. Green to blue
- D. White to pink
3. Is the reaction that converts hydrated copper sulfate to anhydrous copper sulfate exothermic or endothermic?
- A. Exothermic
- B. Endothermic
- C. Neither, it is a physical change only
- D. Both, equally
4. What condition must apply for a reversible reaction to reach dynamic equilibrium?
- A. It must occur in an open system
- B. It must occur in a closed system
- C. The temperature must be zero
- D. The reaction must be irreversible
5. A sealed flask contains a reversible reaction at equilibrium. A student claims the amounts of reactants and products must be equal. Explain why this claim is incorrect.
- A. Equilibrium always means equal amounts by definition
- B. At equilibrium, concentrations are constant but not necessarily equal — it depends on how far the reaction favours products or reactants
- C. Equilibrium cannot be reached in a sealed flask
- D. Reversible reactions never reach equilibrium