Question

the following reaction is an example of a ___________ reaction.
mathrm{c}_{5} mathrm{h}_{8}+7 mathrm{o}_{2}
ightarrow 5 mathrm{co}_{2}+4 mathrm{h}_{2} mathrm{o}

• single replacement
• combination
• decomposition
• double replacement
• combustion

Explanation:

• Single replacement: One element replaces another in a compound. Not applicable here as the reaction is not of that form.
• Combination: Two or more substances combine to form one product. Here, there are two products (\(CO_2\) and \(H_2O\)), so this is incorrect.
• Decomposition: One substance breaks down into two or more simpler substances. The reactants are two (\(C_5H_8\) and \(O_2\)), so this is wrong.
• Double replacement: Two compounds exchange ions. This reaction does not follow that pattern.
• Combustion: A substance reacts with oxygen (\(O_2\)) to produce \(CO_2\) and \(H_2O\) (for a hydrocarbon like \(C_5H_8\)). The given reaction \(C_5H_8 + 7O_2

ightarrow5CO_2 + 4H_2O\) fits the combustion reaction pattern.

Answer:

combustion