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Answer to Question #30428 in Organic Chemistry for tejas

Question #30428
A reddish brown metal is heated in the presence of oxygen forms a black compound. on heating the black compound with hydrogen gas , we get back the metal.what are the metal and compound
Expert's answer
Reddish brown metal is copper (Cu). When copper is heated in the presence of oxygen, it forms copper(II) oxide (CuO) - the black
compound. Copper (II) oxide can be reduced to metal by heating with hydrogen gas:

CuO + H2 = Cu + H2O

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