Question

fe + h₂so₄ --> fe₂(so₄)₃ + h₂; decomposition; synthesis (combination); combustion; single replacement

Explanation:

The reaction is \( \text{Fe} + \text{H}_2\text{SO}_4
ightarrow \text{Fe}_2(\text{SO}_4)_3 + \text{H}_2 \). In a single - replacement reaction, one element replaces another in a compound. Here, iron (Fe) replaces hydrogen (H) in sulfuric acid (\( \text{H}_2\text{SO}_4 \)) to form iron(III) sulfate (\( \text{Fe}_2(\text{SO}_4)_3 \)) and hydrogen gas (\( \text{H}_2 \)). Decomposition reactions involve breaking a compound into simpler substances, synthesis combines substances into a compound, and combustion usually involves a reaction with oxygen (not the case here).

Answer:

Single replacement