Which of the following are combustion reactions? 1) CH₄ (g) + O₂ (g) → CO₂ (g) + H₂O (l)
2) CaO (s) + CO₂ (g) → CaCO₃ (s)
3) PbCO₃ (s) → PbO (s) + CO₂ (g)
4) CH₃OH (l) + O₂ (g) → CO₂ (g) + H₂O (l)

Question

Quizplus · Accepted Answer

Combustion reactions involve a fuel reacting with oxygen to produce carbon dioxide and water as shown below:
Fuel + O2 -> CO2 + H2O
In the given reactions, only reactions 1 and 4 involve a fuel and oxygen reacting to produce carbon dioxide and water, therefore they are combustion reactions. Reactions 2 and 3 do not involve a fuel and oxygen reacting to produce carbon dioxide and water, so they are not combustion reactions.

Which of the Following Are Combustion Reactions? 1) CH4 (G)

Which of the Following Are Combustion Reactions? 1) CH₄ (G)