Question

Rewrite the statement in the correct form using the appropriate word/words

Magnesium reacts with Nitric acid to liberate hydrogen gas.

Answer 1

Part 1: Reaction of magnesium with very dilute Nitric acid:-

1. Magnesium reacts with very dil. Nitric acid at a relatively low concentration to produce hydrogen gas.
2. Reaction involved:
3. $\underset{\mathrm{Magnesium}}{\mathrm{Mg}\left(\mathrm{s}\right)}+\underset{\mathrm{dil}.\mathrm{Nitric}\mathrm{acid}}{2{\mathrm{HNO}}_3\left(\mathrm{aq}\right)}\to \underset{\mathrm{Magnesium}\mathrm{nitrate}}{\mathrm{Mg}{\left({\mathrm{NO}}_3\right)}_2\left(\mathrm{aq}\right)}+\underset{\mathrm{Hydrogen}\mathrm{gas}}{{\mathrm{H}}_2\left(\mathrm{g}\right)(\uparrow )}$
4. Therefore, Nitric acid is so dilute, that it operates as a weak oxidizing agent, incapable of oxidizing hydrogen gas.

Hence, the correct statement is Magnesium reacts with very dilute Nitric acid to liberate hydrogen gas.