Respuesta :
You can stop the burning of methane with water or carbon dioxide extinguishers but problems arise when you try to use this to stop the burning of the magnesium.
Explanation:
To burn magnesium (Mg) and methane (CH₄) you need to react them with oxygen:
2 Mg (s) + O₂ (g) → 2 MgO + heat
CH₄ (g) + 2 O₂ (g) → CO₂ (g) + 2 H₂O (g) + heat
However at that temperatures magnesium (Mg) is able to react with water (H₂O) and carbon dioxide (CO₂).
Mg (s) + 2 H₂O (l) → Mg(OH)₂ (s) + H₂ (g)
2 Mg (s) + CO₂ (g) → 2 MgO (s) + C (s)
So the safe option to stop the burning of the magnesium is to limit the oxygen in the air.
we have used the following notations:
(s) - solid
(g) - gas
(l) - liquid
Learn more about:
combustion reactions
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The burning of methane and magnesium is different as the former produces carbon dioxide along with heat while the latter produces magnesium oxide.
What happens when magnesium and methane are burned?
Magnesium burns in the presence of oxygen to liberate white powdered magnesium oxide along with heat and the reaction can be stopped by carbon dioxide extinguishers and water. The reaction of the magnesium burning can be shown as,
[tex]\rm 2 Mg (s) + O_{2} (g) \rightarrow 2 MgO + heat[/tex]
Methane burns in the presence of oxygen and yields carbon dioxide, water and heat. A blue coloured flame is produced when methane burns and the reaction can be shown as,
[tex]\rm CH_{4} (g) + 2 O_{2} (g) \rightarrow CO_{2} (g) + 2 H_{2}O (g) + heat[/tex]
To limit the magnesium burning the amount of the air should be regulated or removed.
Therefore, the burning of magnesium and methane is different.
Learn more about magnesium and methane burning here:
https://brainly.com/question/9305123
