why will the colour of heated copper powder become black when air is passed over it?
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Because the water vapour present in water
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kalyanikolthay:
actuall its because of the osygen. On passing air through heated copper powder the oxygen from the air reacts with the copper to produce copper oxide of the formula CuO which has a characteristic black colour.
Answered by
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On passing air through heated copper powder the oxygen from the air reacts with the copper to produce copper oxide of the formula CuO which has a characteristic black colour.
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