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Aim: To show oxidation and reduction reaction
Apparatus: China dish 1g copper powder, burner, wire gauze, tripod stand and Hydrogen gas.
Procedure:
Heat a china dish containing about 1 g copper powder.
Now pass hydrogen gas over this heated material.
Observation:
The surface of copper powder becomes coated with black copper oxide.
Hydrogen gas is passed over this heated material [CuO] the black coating on the surface turns brown as the reverse reaction takes place and copper is obtained.
Conclusion: In the first case copper, was oxidized to copper oxide by the following reaction
2Cu + O2 -----Heat→ 2CuO
this is an oxidation reaction (black coating)
In the second case when hydrogen gas was passed over heated [CuO] copper metal was obtained because copper oxide got reduced to copper metal by the following reaction
Apparatus: China dish 1g copper powder, burner, wire gauze, tripod stand and Hydrogen gas.
Procedure:
Heat a china dish containing about 1 g copper powder.
Now pass hydrogen gas over this heated material.
Observation:
The surface of copper powder becomes coated with black copper oxide.
Hydrogen gas is passed over this heated material [CuO] the black coating on the surface turns brown as the reverse reaction takes place and copper is obtained.
Conclusion: In the first case copper, was oxidized to copper oxide by the following reaction
2Cu + O2 -----Heat→ 2CuO
this is an oxidation reaction (black coating)
In the second case when hydrogen gas was passed over heated [CuO] copper metal was obtained because copper oxide got reduced to copper metal by the following reaction
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