Which of the following will release hydrogen | vedclass

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(D) Metals that are more reactive than hydrogen in the electrochemical series can displace hydrogen from dilute acids. $Mg + 2HCl \rightarrow MgCl_2 +

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Magnesium

Vedclass · Answer

(D) Metals that are more reactive than hydrogen in the electrochemical series can displace hydrogen from dilute acids. $Mg + 2HCl \rightarrow MgCl_2 + H_2 \uparrow$. Copper $(Cu)$ and Mercury $(Hg)$ are below hydrogen in the electrochemical series and do not react with dilute $HCl$ to release $H_2$ gas. Phosphorus is a non-metal and does not react with $HCl$ to release hydrogen gas. Therefore,Magnesium is the correct answer.

Which of the following will release hydrogen gas upon reaction with hydrochloric acid?

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