Reversible Reactions & Equilibria Quiz
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5 questions, one answer each
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1. What symbol shows that a reaction is reversible?
- A. →
- B. ⇌
- C.
- D. =
2. At dynamic equilibrium, what is true of the forward and backward reactions?
- A. They have both stopped
- B. They occur at the same rate
- C. Only the forward reaction occurs
- D. The backward reaction is much faster
3. What catalyst is used in the Haber process?
- A. Platinum
- B. Nickel
- C. Iron
- D. Copper
4. What are the conditions for the Haber process?
- A. 450 °C, 200 atmospheres, iron catalyst
- B. 100 °C, 1 atmosphere, no catalyst
- C. 900 °C, 50 atmospheres, platinum catalyst
- D. 20 °C, 200 atmospheres, copper catalyst
5. (Higher) In N2 + 3H2 ⇌ 2NH3, how does increasing pressure affect the equilibrium position?
- A. It has no effect
- B. It shifts equilibrium towards the reactants
- C. It shifts equilibrium towards ammonia, as there are fewer gas molecules on that side
- D. It shifts equilibrium towards nitrogen only