Answer all the Question’s from (a) to (j)

Question

Classify the following reactions as combination, decomposition, displacement, double displacement or redox reactions.
a) ZnCO3 → ZnO +CO2
b) Lead nitrate → Lead oxide + nitrogen dioxide + oxygen
c) C+O2 → CO2
d) CuSO4+Fe →FeSO4+Cu
e) CaO + H2O → Ca(OH)2 + energy
f) 2H2O→ 2H2+O2
g) BaCl2 + Na2SO4 → BaSO4 + 2NaCl
h) Sodium + Oxygen → Sodium oxide
i) 2AgBr → 2Ag + Br2
j) Fe2O3 + 2Al → 2Fe + Al2O3

Answer 1

a) ZnCO₃ → ZnO + CO₂

   - Decomposition

b) Lead nitrate → Lead oxide + nitrogen dioxide + oxygen
   - Decomposition

c) C + O₂ → CO₂
   - Combination

d) CuSO₄ + Fe → FeSO₄ + Cu
   - Displacement (Single displacement or single replacement)

e) CaO + H₂O → Ca(OH)₂ + energy
   - Combination

f) 2H₂O → 2H₂ + O₂
   - Decomposition

g) BaCl₂ + Na₂SO₄ → BaSO₄ + 2NaCl
   - Double displacement (Double replacement)

h) Sodium + Oxygen → Sodium oxide
   - Combination

i) 2AgBr → 2Ag + Br₂
   - Displacement (Double displacement or double replacement)

j) Fe2O₃ + 2Al → 2Fe + Al₂O₃
   - Displacement (Redox reaction)

Please note that some reactions can have multiple classifications depending on how you interpret them. For instance, reaction "d" could also be considered a redox reaction since there is a transfer of electrons between copper and iron. Similarly, reaction "j" involves a redox reaction as well, as there is a transfer of electrons between iron and aluminum.