A magnesium ribbon is burnt in oxygen to give a white compoundX accompanied by emission of light. If the burning ribbon is nowplaced in an atmosphere of nitrogen, it continues to burn and formsa compound Y. Identify X and Y
Question
A magnesium ribbon is burnt in oxygen to give a white compoundX accompanied by emission of light. If the burning ribbon is nowplaced in an atmosphere of nitrogen, it continues to burn and formsa compound Y. Identify X and Y
Solution
When a magnesium ribbon is burnt in oxygen, it forms a white compound known as Magnesium Oxide (MgO). This is compound X.
The chemical reaction can be represented as follows:
2Mg + O2 → 2MgO
When the burning magnesium ribbon is placed in an atmosphere of nitrogen, it continues to burn to form Magnesium Nitride (Mg3N2). This is compound Y.
The chemical reaction can be represented as follows:
3Mg + N2 → Mg3N2
So, X is Magnesium Oxide and Y is Magnesium Nitride.
Similar Questions
Magnesium ribbon is burnt in an atmosphere of nitrogen gasto form solid magnesium nitride.
Assertion: Magnesium ribbon burns with a dazzling flame in air.Reason: A white substance magnesium nitride is formed.
(a) A piece of magnesium ribbon is ignited and placed in a gas jar of oxygen.The equation for the reaction is 2Mg + O2 → 2MgO (i) Give two observations that would be made in this reaction. (2) 1 ................................................................................................................................................................................................................................................................................ .................................................................................................................................................................................................................................................................................... 2 ................................................................................................................................................................................................................................................................................ ....................................................................................................................................................................................................................................................................................(ii) State why this is an oxidation reaction. (1) .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................(b) A second piece of magnesium ribbon is ignited and placed in a gas jar of carbon dioxide.A very exothermic reaction occurs, forming magnesium oxide and carbon.(i) State what is meant by the term exothermic. (1) .................................................................................................................................................................................................................................................................................... ....................................................................................................................................................................................................................................................................................(ii) Give the chemical equation for this reaction. (1) ....................................................................................................................................................................................................................................................................................(iii) A fire starts in a warehouse where magnesium is stored.Suggest why it would not be suitable to use a carbon dioxide fire extinguisher to put out this fire.
When a magnesium ribbon is burnt in air, what are the two observations that you make?
magnesium ribbon burns with a dazzling flame in air (oxygen)and changes into a white substance, magnesium oxide. Is magnesium being oxidised orreduced in this reaction?
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