Generally, metals react with acids to produce | vedclass

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(C) Generally, metals react with dilute acids to produce salt and hydrogen gas $(M + 	ext{dilute acid} ightarrow 	ext{salt} + H_2)$.However, nitri

Vedclass · Accepted Answer

$HNO_3$

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(C) Generally, metals react with dilute acids to produce salt and hydrogen gas $(M + 	ext{dilute acid} ightarrow 	ext{salt} + H_2)$.However, nitric acid $(HNO_3)$ is a strong oxidizing agent.When a metal reacts with $HNO_3$, the hydrogen gas produced is oxidized to water $(H_2O)$ by the acid, and the acid itself gets reduced to nitrogen oxides $(N_2O, NO, NO_2)$.Therefore, $HNO_3$ does not evolve hydrogen gas with most metals.Exceptions are magnesium $(Mg)$ and manganese $(Mn)$, which react with very dilute nitric acid to evolve hydrogen gas.

Generally, metals react with acids to produce salt and hydrogen gas. Which of the following acids does not produce hydrogen gas when reacting with most metals (except $Mn$ and $Mg$)?

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