JAMB - Chemistry (1991 - No. 32)
Oxygen gas can be prepared by heating?
ammonium trioxonitrate (V)
ammonium trioxonitrate (III)
potassium trioxonitrate (V)
manganese (IV) oxide
Explicació
Heating potassium trioxonitrate(V) (also known as potassium nitrate, KNO₃) can lead to the production of oxygen gas. When heated, potassium nitrate decomposes, yielding potassium nitrite (KNO₂), oxygen gas (O₂), and potentially other byproducts like nitrogen gas and potassium oxide.