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Explain the action of heat on copper ....

Explain the action of heat on copper .

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Action of Heat : On heating at different temperatures in the presence of oxygen, copper form two type of oxides `CuO,Cu_2O` .
`2Cu+O_2 overset ( "below " 1370K) to 2CuO`(copper II oxide-black )
`4 Cu +O_2 overset("above"1370K) to 2Cu_2O `(Copper I oxide-red )
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