Class 10th chemistry

Q1. Why should a Magnesium Ribbon be cleaned before burning in air?

Answer: when magnesium ribbon is exposed into the air for a period of time, it forms a protective layer of Magnesium oxide or Basic Magnesium Carbonate. This layer stops the burning of Magnesium Ribbon. That’s why Magnesium ribbon should be cleaned before burning

Note –
Magnesium oxide – MgO
Basic Magnesium carbonate = MgCO3 . Mg(OH)2

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