Question

Hydrogen gas is not evolved when copper metal reacts with hcl

Answer 1

Answer:

Copper doesn't normally react with hydrochloric acid to produce hydrogen gas because as a metal, copper isn't active enough to displace hydrogen. More active metals (zinc, aluminum, calcium, magnesium) are more reactive than copper which lies below hydrogen on the electrochemical series

Explanation:

Answer 2

Answer:copper will not displace hydrogen because it is below hydrogen in reactivity series

Explanation:only metals above hydrogen can displace hydrogen from its compounds.

Copper does displace hydrogen when it reacts with concentrated sulphuric acid and mot dilute