Question

give a scientific reason: Hydrogen gas is not evolved when copper reacts with dilute H2SO4​

Answer 1

Answer:

Explanation:

his 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

Answer 2

Scientific reason on Hydrogen gas is not evolved when copper reacts with dilute $H_2SO_4$:​

• Evolution of hydrogen gas that does not take place when  the hydrochloric acid or $H_2SO_4$ is reacted with copper.
• This is because copper is a less reactive metal as compared to hydrogen.
• On the reaction table it lies below the hydrogen and for reaction to replace one an element from other, it should be on the higher end of the reaction table.
• Hence addition of copper to hydrochloric acid does not give any reaction and hydrogen stays intact providing us the reason for no gas evolution during the process.

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