Question

pb(no₃)₂ --> pbo + no₂ + o₂; single replacement; synthesis (combination); decomposition; combustion

Explanation:

The reaction given is \( \text{Pb(NO}_3\text{)}_2
ightarrow \text{PbO} + \text{NO}_2 + \text{O}_2 \). In a decomposition reaction, a single compound breaks down into two or more simpler substances. Here, lead(II) nitrate (\( \text{Pb(NO}_3\text{)}_2 \)) is breaking down into lead(II) oxide (\( \text{PbO} \)), nitrogen dioxide (\( \text{NO}_2 \)), and oxygen (\( \text{O}_2 \)), which fits the definition of a decomposition reaction. Single replacement involves one element replacing another in a compound, synthesis is combining substances into one, and combustion usually involves a reaction with oxygen to produce oxides (often of carbon and hydrogen, though not always, but this reaction doesn't fit that pattern as it's a breakdown of a single compound).

Answer:

Decomposition