Question

why dil.hcl reacts with mg to liberate hidrogen , but the same is not liberated when the acid reacts with Cu.

Answer 1

Answer:

Copper, silver, gold and platinum being less reactive than hydrogen cannot displace hydrogen from acids.

Metals that are more reactive than hydrogen can displace hydrogen from acids. These metals include sodium, potassium, lead and zinc.

Answer 2

Answer:

because dil hcl only reacts with more reactive metals to give hydrogen

while, cu is a less reactive metal

Explanation:

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