Question

Name one metal which reacts very slowly with boiling water to liberate hydrogen?

Answer 1

Reaction of metal with boiling water:

• Magnesium liberates hydrogen from boiling water but the reaction is slow.
• $\underset{\mathrm{Magnesium}}{\mathrm{Mg}\left(\mathrm{s}\right)}+\underset{\mathrm{Water}}{2{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)}\to \underset{\mathrm{Hydroxide}}{\underset{\mathrm{Magnesium}}{\mathrm{Mg}{\left(\mathrm{OH}\right)}_2\left(\mathrm{s}\right)}}+\underset{\mathrm{Gas}}{\underset{\mathrm{Hydrogen}}{{\mathrm{H}}_2\left(\mathrm{g}\right)}}$