What will happen when Brown colour substance (x) is react with oxygen and form (y) . Name this reaction. When (y) again react with hydrogen gas its comes in brown colour (x) write both the chemical reaction?
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2Cu + O2 ---heat-> 2CuO
Oxidation reaction.
CuO + H2 ----heat---> Cu + H2O
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A) The substance x is Copper as copper is brown in colour. y is Copper Oxide (CuO)
B) This is a redox chemical reaction. Bcz copper is getting oxidized by heating, to copper oxide. while copper oxide encounters reduction on treating with H2 gas.
3) 2Cu + O2 > 2CuO
CuO + H2 > Cu +H2O
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