if a magnesium ribbon is exposed tin air, does it react with carbon di oxide to form a layer of magnesium carbonate on its surface or does it react with oxygen to form a layer of magnesium oxide ? or both? or none?

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Solution

Magnesium ribbon reacts with both:
i. oxygen to form magnesium oxide
ii. carbon dioxide to form magnesium oxide and elemental carbon.
2Mg (s) + CO₂(g) â†’ 2MgO(s) + C(s)

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A magnesium ribbon is burnt in air. A student made the following observations:

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iii. Magnesium ribbon undergoes decomposition reaction.

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if a magnesium ribbon is exposed tin air, does it react with carbon di oxide to form a layer of magnesium carbonate on its surface or does it react with oxygen to form a layer of magnesium oxide ? or both? or none?

Magnesium ribbon reacts with both:i. oxygen to form magnesium oxideii. carbon dioxide to form magnesium oxide and elemental carbon.2Mg (s) + CO2(g) â†’ 2MgO(s) + C(s)

Magnesium ribbon reacts with both:
i. oxygen to form magnesium oxide
ii. carbon dioxide to form magnesium oxide and elemental carbon.
2Mg (s) + CO₂(g) â†’ 2MgO(s) + C(s)