Question 3
Nitrogen and its CompoundsOn heating, which of the following compounds will decompose to the free metal, nitrogen (IV) oxide and oxygen?
- A.Ca(NO3)2
- B.Cu(NO3)2
- C.AgNO3
- D.NaNO3
Show the answer and explanation
Answer: C (AgNO3)
Explanation
Nitrates of metals low in the activity series, like silver, decompose right down to the metal: 2AgNO3 → 2Ag + 2NO2 + O2.