6(i)
Identify the reactants P, Q and R in the following reactions:
(a) Copper (II) oxide + P ⟶ Copper + Water + Nitrogen
(b) Iron pyrite + Q ⟶ Iron oxide + Sulphur dioxide
(c) Ammonia + R ⟶ Nitrogen + Water
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(a) P is Ammonia (NH3).
3CuO + 2NH3 ⟶ 3Cu + 3H2O + N2
(b) Q is Oxygen (O2).
4FeS2 + 11O2 ⟶ 2Fe2O3 + 8SO2
(c) R is Oxygen (O2).
4NH3 + 3O2 ⟶ 2N2 + 6H2O