In the reaction setup shown above, which of the following are true? I. This setup can be used to prepare a soluble gas by water displacement. II. This setup involves a decomposition reaction if the substance heated is potassium chlorate. III. This setup can be used to prepare an insoluble gas by water displacement.
Correct answer: D. II and III
- A. I only
- B. II only
- C. I and III
- D. II and III
- E. I, II, and III
Explanation
This setup can be used to prepare an insoluble gas but not a soluble one. If the substance is potassium chlorate, it does decompose into potassium chloride and oxygen.
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