Question

Carbon dioxide is not a supporter of combustion. But a burning magnesium ribbon continues burning in a gas jar filled with carbon dioxide why?

Answer 1

Answer:

because carbon is formed as a biproduct as the carbon which is formed in the form of soot

Answer 2

Magnesium burns in carbon dioxide because the oxygen in the carbon dioxide is able to bond with magnesium and produce an oxide.

Hence it keeps on burning.

2Mg(s)+CO

2

​

(g)→2MgO(s)+C(s)

So the correct option is (i) and (iii).

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