Question

Write balanced chemical reaction between Magnesium metal with steam .

Answer 1

Reaction between Magnesium (Mg) and water (H₂O)

• Magnesium metal reacts with steam to form Magnesium oxide $\left(\mathrm{MgO}\right)$ and Hydrogen gas $\left({\mathrm{H}}_2\right)$ is liberated.
• Metals that lie topmost in the reactivity series react with cold water, metals that lie a bit below react with hot water while metals that lie in the lower middle order react with steam.
• Magnesium does not react with cold water because magnesium is coated with insoluble Magnesium hydroxide, which inhibits water from coming into contact with it.

$\underset{\mathrm{Magnesium}}{\mathrm{Mg}\left(\mathrm{s}\right)}+\underset{\mathrm{Steam}}{{\mathrm{H}}_2\mathrm{O}\left(\mathrm{g}\right)}\to \underset{\mathrm{Magnesium}\mathrm{oxide}}{\mathrm{MgO}\left(\mathrm{s}\right)}+\underset{\mathrm{Hydrogen}}{{\mathrm{H}}_2\left(\mathrm{g}\right)}$