Isopropanol burns in oxygen to yield carbon dioxide, water, and heat. Which word equation best represents this chemical reaction?
Answer
A
isopropanol plus oxygen rightarrow carbon dioxide plus water plus heat
B
isopropanol rightarrow carbon dioxide plus water plus oxygen
C
isopropanol plus oxygen plus heat rightarrow carbon dioxide plus water
D
isopropanol rightarrow carbon dioxide plus water plus heat
Explanation
Combustion uses oxygen as a reactant and releases energy as heat. The products named in the question are carbon dioxide and water, so the word equation is isopropanol plus oxygen → carbon dioxide plus water plus heat. This matches choice A; choice C incorrectly shows heat as a reactant.
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