Checmical reactions and equations solution

Chemical reactions and equations model test questions

Why should a magnesium ribbon be cleaned before burning in air?

Magnesium is a reactive metal. It is a soft metal and available in a lab as a thin ribbon for laboratory experiments. When the ribbon comes into direct contact with air, its outer layer forms its oxide. Magnesium oxide is a stable compound and interferes with burning. 2Mg(s) + O2(g) ——> 2MgO(s) Cleaning of the …

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