A brown subestance 'x' on heating in air forms a subestance 'y' . Wen hydrogen gas is passed over heated 'y' it again changes black into 'x' name x and y
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Hi !
The brown substance "x" is Copper (Cu)
y -> Copper oxide( CuO)
Cu + O₂ ---> CuO
CuO + H₂ ----> Cu + H₂O
The brown substance "x" is Copper (Cu)
y -> Copper oxide( CuO)
Cu + O₂ ---> CuO
CuO + H₂ ----> Cu + H₂O
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x is copper.... when it is heated in air it form copper oxide
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