1g of copper powder was taken irt a China dish and heated. What change takes place on heating?
When hydrogen is passed over this heated substance, a visible change is seen in it. Give the
chemical equations of reactions.
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Answer - CuO + H2 -----> Cu + H2O
Explanation:
1.
we get copper oxide, black coating is formed
2.
when hydrogen is passed through it black colour changes into brown reverse reaction happens and we again get copper and water
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