when a burning magnesium ribbon is placed in a jar of carbon dioxide, it continues burning.write the chemical equation involved in the reaction and balance it.plzzzzzzzzzzzzz....... answer it soon

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sanjeetmanna's profile pic

sanjeetmanna | College Teacher | (Level 3) Assistant Educator

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Magnesium burns in presence of carbon dioxide because, the oxygen in the carbon dioxide is able to bond with magnesium and produce an oxide. Carbon is formed as a biproduct the carbon which is formed is in the form of soot.

Burning or Mg in CO2 forms Magnesium oxides.

2 Mg + CO2 → 2 MgO + C (soot).

Magnesium is a alkaline earth metals, In its pure form, it burns in air to produce oxides.

2 Mg + O2 → 2 MgO

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sainib | College Teacher | (Level 1) eNoter

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Magnesium is one of the alkaline-earth metals, and is one of the most common elements in the Earth's crust.  In its pure form, it is silvery white, and relatively soft.  It burns in air with a brilliant white light, and for this reason is often used in flares and fireworks.

2Mg(s)  +  O2(g)  ——>  2MgO(s)

The high temperatures reached during the combustion also allow small amounts of magnesium to react with nitrogen in the air, producing magnesium nitride:

3Mg(s)  +  N2(g)  ——>  2Mg3N2(s)

Magnesium also burns in an environment of carbon dioxide

2Mg(s)  +  CO2(g)  ——>  2MgO(s)  +  C(s)