CBSE BOARD X, asked by omprakashbehera276, 1 year ago

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

Answers

Answered by Anonymous
11
Heya ...☺

Magnesium is a reactive element and reacts with oxygen when kept in open , therefore it's cleaned in order to remove the layer of magnesium oxide .
Answered by Anonymous
3
The magnesium ribbon which we usually has a coating of a white layer of magnesium oxide on its surface. It is formed by the slow reaction of moist air on it. This hinders the burning of magnesium. So, this layer is removed by rubbing with sandpaper before burning.

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