Question

Classify the following reactions as Direct combination, Decomposition,
Displacement, Precipitation and Neutralization.
(1) Fe + CuSO4 → FeSO4 + Cu
(ii) 2Pb(NO3)2 → 2PbO + 4NO2T + O21 (3) 2Mg + O2 -----> 2MgO (4) Na2SO4 + Pb(No3)2 -----> PbSO4 + 2NaNO3​

Answer 1

Answer:

1 displacement

2decomposition

3combination

4double displacement

Answer 2

$Fe + CuSO_4$→ $FeSO_4 + Cu$ - Single Displacement Reaction

Explanation:

• $Fe + CuSO_4$→ $FeSO_4 + Cu$ - Single Displacement Reaction

   In this reaction, copper is displaced by iron forming $FeSO_4$

• $2Pb(NO_3)_2$ →$2PbO + 4NO_2 + O_2_1$ - Decomposition  Reaction

    In this reaction, lead nitrate salt is decomposed into respective products.

• 2Mg + O2 →2MgO - Direct combination Reaction

    In this reaction, magnesium combines with oxygen to give magnesium oxide.

• $Na_2SO_4 + Pb(NO_3)_2$ → $PbSO_4 + 2NaNO_3$​ - Precipitation  Reaction

     In this reaction there is the formation of a precipitate of lead sulfate (white solid) and sodium nitrate (white powdery crystals).