(i) Type of reaction: Double displacement
Balanced equation: Na₂CO₃ + 2HCl → 2NaCl + H₂CO₃
(ii) Type of reaction: Decomposition
Balanced equation: 2NH₄NO₂ → N₂ + 2H₂O
(iii) Type of reaction: Combination
Balanced equation: 2N₂ + 5O₂ → 2N₂O₅
(iv) Type of reaction: Decomposition
Balanced equation: MgCO₃ → MgO + CO₂
(v) Type of reaction: Single displacement
Balanced equation: 2KBr + Cl₂ → 2KCl + Br₂
(vi) Type of reaction: Single displacement
Balanced equation: Zn + CuSO₄ → Cu + ZnSO₄
(vii) Type of reaction: Combination
Balanced equation: 4P + 5O₂ → P₄O₁₀ (Note: P₄O₆ is incorrect; the correct product is P₄O₁₀ for phosphorus pentoxide)
(viii) Type of reaction: Double displacement
Balanced equation: SrBr₂ + (NH₄)₂CO₃ → SrCO₃ + 2NH₄Br
(ix) Type of reaction: Double displacement
Balanced equation: 2AgNO₃ + (NH₄)₂CrO₄ → Ag₂CrO₄ + 2NH₄NO₃
(x) Type of reaction: Single displacement
Balanced equation: 2K + 2H₂O → 2KOH + H₂
(xi) Type of reaction: Single displacement
Balanced equation: 2Al + 3Pb(NO₃)₂ → 2Al(NO₃)₃ + 3Pb
(xii) Type of reaction: Combination
Balanced equation: 4Fe + 3O₂ → 2Fe₂O₃ (Note: Fe₃O₄ is iron(II,III) oxide; balanced equation for Fe₃O₄ is 3Fe + 2O₂ → Fe₃O₄)
Parent Tip: Review the logic above to help your child master the concept of reaction type worksheet.
