passwella.
Menu

JAMB Chemistry 1991 Question 34

Question 34

Hydrogen, Oxygen and Oxides

Oxygen gas can be prepared by heating

  1. A.ammonium trioxonitrate (V)
  2. B.ammonium trioxonitrate (III)
  3. C.potassium trioxonitrate (V)
  4. D.manganese (IV) oxide.
Show the answer and explanation

Answer: C (potassium trioxonitrate (V))

Explanation

Heating potassium nitrate gives oxygen: 2KNO3 → 2KNO2 + O2. Ammonium nitrate gives N2O and ammonium nitrite gives N2.