Question

What is the product obtained when an active metal reacts with water?

Answer 1

Formation of product:

• Only a few metals are active enough to react with water directly.
• These are the metals that are active. $\mathrm{Li},\mathrm{Na},\mathrm{K},\mathrm{Rb},\mathrm{Cs},\mathrm{Ca},\mathrm{Sr},\mathrm{and}\mathrm{Ba}$ are active metals.
• They produce metal hydroxide and hydrogen gas when they react with water.

Chemical reaction

$$\begin{gathered} \underset{\mathrm{Sodium}}{2\mathrm{Na}\left(\mathrm{s}\right)}+\underset{\mathrm{Water}}{2{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)}\to \underset{\mathrm{Sodium}\mathrm{hydroxide}}{2\mathrm{NaOH}\left(\mathrm{aq}\right)}+\underset{\mathrm{Hydrogen}}{{\mathrm{H}}_2\left(\mathrm{g}\right)} \\ \underset{\mathrm{Barium}}{\mathrm{Ba}\left(\mathrm{s}\right)}+\underset{\mathrm{Water}}{2{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)}\to \underset{\mathrm{Barium}\mathrm{hydroxide}}{\mathrm{Ba}{\left(\mathrm{OH}\right)}_2\left(\mathrm{aq}\right)}+\underset{\mathrm{Hydrogen}}{{\mathrm{H}}_2\left(\mathrm{g}\right)} \end{gathered}$$