Ask Question
23 March, 07:29

Which of the following shows an accurate combustion reaction?

. 2CH4 + O2 → 2CH3OH

. Cu + O2 → CuO2

. Mg + H2O → MgO + H2

. SO + H2O → SO2 + H2

+5
Answers (1)
  1. 23 March, 10:28
    0
    Cu + O₂ → CuO₂

    Explanation:

    A combustion reaction is the reaction with oxygen along with the release of energy in form of heat or light.

    Organic compounds (like CH₄) undergo combustion forming water and CO₂.

    The combustion reaction of CH₄ is:

    CH₄ + 2O₂ → CO₂ + 2H₂O

    Hence, the first equation from the choices is not showing the combustion reaction of CH₄.

    Not only organic compounds can undergo combustion. Metals and no metals can undergo combustion, i. e. metals and no metals can react with oxygen releasing light or heat.

    The reaction of copper and oxygen (second choice) is a combustion reaction:

    Cu + O₂ → CuO₂

    The formation of water (2H₂ + O₂ → 2H₂O) is other example of a combustion reaction where no organic compounds are involved.

    On the other hand, the other two equations from the choice list are not reactions with oxygen, so they do not show combustion reactions.
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “Which of the following shows an accurate combustion reaction? . 2CH4 + O2 → 2CH3OH . Cu + O2 → CuO2 . Mg + H2O → MgO + H2 . SO + H2O → SO2 ...” in 📘 Chemistry if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers