Question

which of the following reactions are combustion reactions? o naoh + hcl → hoh + nacl o ca + s → cas o c₅h₁₂ + o₂ → h₂o + co₂ o k + agcl → ag + k

Explanation:

A combustion reaction is a reaction in which a substance reacts with oxygen and produces heat and light. The first reaction is an acid - base neutralization reaction. The second is a combination reaction. The fourth is a single - displacement reaction. The reaction $\mathrm{C_{5}H_{12}+O_{2}\to H_{2}O + CO_{2}}$ is a combustion reaction as a hydrocarbon ($\mathrm{C_{5}H_{12}}$) reacts with oxygen to form carbon dioxide and water.

Answer:

$\mathrm{C_{5}H_{12}+O_{2}\to H_{2}O + CO_{2}}$