Question

(c) Why does copper not evolve hydrogen gas on reacting with dilute sulphuric acid?
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Answer 1

Explanation:

Copper does not react with dilute sulphuric acid, liberating hydrogen because copper is lower in electromotive series than hydrogen, or more fundamentally, because the magnitude of change in gibbs free energy when a single atom of elemental hydrogen ionizes is greater than the magnitude of the change in gibbs free ...

Answer 2

Answer:

This is so because copper lies below in the series than hydrogen. ... Thus, it will not easily replace hydrogen from its chemical reaction and evolve hydrogen gas. The chemical equation for the reaction of copper and sulfuric acid follows: Thus, this is so because copper lies below in the series than hydrogen.

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