Potassium burns in absence of air. Give reason.
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Answer:
Potassium nitrate reacts with charcoal and sulphur to produce potassium sulphide, CO2 gas and N2 gas along with heat. Potassium nitrate contains plenty of oxygen to ensure good combustion.
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Potassium reacts with oxygen, water, and carbon dioxide components in air as it.
When potassium comes in contact with air it burns quickly due to the reaction of oxygen and moisture as it is highly reactive metal.
It comes on top on reactivity series.
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