Question

iron and HCl gives H2 but why copper and HCl cannot give H2 gas​

Answer 1

Explanation:

When a metal reacts with HCl to release H2 gas it's a single displacement reaction. Copper doesn't displace hydrogen because copper has a higher standard electrode potential than hydrogen.

Answer 2

Answer:

Copper doesn't displace hydrogen because copper has a higher standard electrode potential than hydrogen.

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