Question

Name the type of chemical reaction represented by the following equation: (i) CaO + H2O → Ca(OH)2 (ii) 3BaCl2 + Al2(SO4)3 → 2AIC13 + 3BaSO4 (iii) 𝟐𝑭𝒆𝑺𝑶𝟒 → 𝑯𝒆𝒂𝒕→ 𝑭𝒆𝟐𝑶𝟑 + 𝑺𝑶𝟐 + 𝑺𝑶𝟑

September 11, 2024

Answer

(i) CaO + H₂O → Ca(OH)₂

Type: Combination Reaction
Reason: Two reactants (CaO and H₂O) combine to form a single product (Ca(OH)₂).

(ii) 3BaCl₂ + Al₂(SO₄)₃ → 2AlCl₃ + 3BaSO₄

Type: Double Displacement (Precipitation) Reaction
Reason: The exchange of ions occurs between BaCl₂ and Al₂(SO₄)₃, forming AlCl₃ and an insoluble precipitate of BaSO₄.

(iii) 2FeSO₄ → (Heat) → Fe₂O₃ + SO₂ + SO₃

Type: Thermal Decomposition Reaction
Reason: A single compound (FeSO₄) breaks down into multiple products (Fe₂O₃, SO₂, and SO₃) upon heating.

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