Question:
How copper displaces hydrogen in the following reaction CuO + HCL gives CuCl + H²O
Answer:
This reaction is an example of acid-base/neutralisation reaction. Here CuO is basic in nature while we all know Hydrochloric acid (HCl) is acidic in nature. Both of them simply react to give salt (Copper chloride) & water.
Don't get confused by considering this reaction as single displacement reaction where more reactive element displaces less reactive element.
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