When propanol (C3H7OH) is burned in excess oxygen, which of the following products are formed?

• A. CO2 and H2O
• B. CO and H2
• C. C and H2O
• D. CH4 and O2

Answer: (A)

Verified step by step guidance

1. Identify the type of reaction: Burning (combustion) of propanol (C3H7OH) in excess oxygen is a complete combustion reaction.
2. Recall that complete combustion of a hydrocarbon or alcohol produces carbon dioxide (CO2) and water (H2O) as products.
3. Write the general form of the complete combustion reaction for an alcohol: \(\mathrm{C_xH_yOH} + O_2 \rightarrow CO_2 + H_2O\).
4. Understand that incomplete combustion (limited oxygen) can produce carbon monoxide (CO), carbon (C), or other products, but since oxygen is in excess, complete combustion occurs.
5. Conclude that the products formed when propanol burns in excess oxygen are carbon dioxide (CO2) and water (H2O).