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

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asked Feb 7, 2018 in Chemistry by sforrest072 (157,439 points) ● 61 ● 410 ● 941
Why should a magnesium ribbon be cleaned before burning in air?

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answered Feb 7, 2018 by mdsamim (213,225 points) ● 5 ● 10 ● 15
 
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When magnesium ribbon is exposed to air, it reacts with oxygen in the air to form magnesium oxide. This oxide layer interferes with the burning of magnesium ribbon. Thus, the magnesium ribbon should be cleaned using sand paper before burning in air.

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