Question 46
Nitrogen and its CompoundsThe gas that can best be collected by downward displacement of air is
- A.chlorine
- B.sulphur (IV) oxide
- C.ammonia
- D.carbon (IV) oxide.
Show the answer and explanation
Answer: C (ammonia)
Explanation
Ammonia is lighter than air, so it rises into an inverted jar and pushes the air downwards and out. The other gases are denser than air.