Q

Which compound is formed when a Magnesium ribbon is burnt in air?

ALP CBT-1, 10-Aug-18 S-1 2018
✓ Answer: C Magnesium Oxide
When Magnesium (Mg) ribbon is burnt in air, Magnesium Oxide (MgO) is formed. A bright white light is produced when the ribbon is burnt and powdery ash i.e. MgO is formed. The reaction is a highly exothermic reaction, i.e. a lot of heat is produced. The oxygen in the air reacts with Mg to form MgO: 2Mg + O2 → 2MgO + energy, is the balanced equation for this reaction.
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