Question 42
Hydrogen, Oxygen and OxidesTrioxonitrate(V) acid is not used for preparing hydrogen gas from metals because it
- A.is strongly oxidizing
- B.is volatile
- C.renders the metal passive
- D.forms a layer of oxide on the metal.
Show the answer and explanation
Answer: A (is strongly oxidizing)
Explanation
HNO3 is a strong oxidising agent: any hydrogen formed is oxidised to water, and oxides of nitrogen are given off instead.