A magnesium ribbon is burnt in oxygen to give a white compound X accompanied by emission of light.

Write a balanced chemical equation, when X is dissolved in water.

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Solution

When magnesium ribbon is burnt in the presence of oxygen, it forms magnesium oxide. The chemical formula for compound X is MgO.

$Mg (s) + O_{2} (g) Heat - - \to MgO (s) + Energy$

The reaction of a metal oxide with water results in the formation of a metal hydroxide. So, when the magnesium oxide (X) is dissolved in water, it forms magnesium hydroxide.

The chemical equation for this reaction is:

$MgO (s) + H_{2} O (l) \to Mg {(OH)}_{2} (aq)$

Since the number of Mg, O, and H atoms is equal on both the sides, the chemical equation is balanced.

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accompanied by the emission of light. If the burning ribbon is now placed in an atmosphere of nitrogen, it continues to burn and forms a compound

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A magnesium ribbon is burnt in oxygen to give a white compound X accompanied by emission of light. Write a balanced chemical equation, when X is dissolved in water.

A magnesium ribbon is burnt in oxygen to give a white compound X accompanied by emission of light.

Write a balanced chemical equation, when X is dissolved in water.