state the hydrogen had is passed over black copper oxide a reddish coloured layer of copper is formed
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Hydrogen displaces oxygen from copper oxide due to reduction process and hence we obtain copper which is reddish brown in colour
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a- Cu
because addition of hydrogen or removal of oxygen is called reduction
B - H2 because it removes O2 and CuO is oxidising agent because it gives O2 to H2 molecules
C - yes it redox reaction because there is oxidation and reduction both happen so it redox
because addition of hydrogen or removal of oxygen is called reduction
B - H2 because it removes O2 and CuO is oxidising agent because it gives O2 to H2 molecules
C - yes it redox reaction because there is oxidation and reduction both happen so it redox
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