Burning Magnesium Reaction
When a magnesium ribbon is burned in the presence of air using a heat source like a spirit lamp, it undergoes a combustion reaction.
Magnesium (Mg) reacts with oxygen (O2) present in the air.
The balanced chemical equation for this reaction is:
$ 2Mg_{(s)} + O_{2(g)} \rightarrow 2MgO_{(s)} $
The solid product formed is magnesium oxide (MgO).
Therefore, burning magnesium ribbon forms magnesium oxide.
Comparing this with the given options:
- Magnesium sulphate (MgSO4)
- Magnesium dioxide (This is not a stable compound formed under these conditions)
- Magnesium oxide (MgO)
- Magnesium hydroxide (Mg(OH)2)
The correct product is Magnesium oxide.
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