Question

Splitting up of water molecule into hydrogen and oxygen, on passing electric current, is a ________ reaction.

Answer 1

• $$\begin{gathered} 2{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)\stackrel{\mathrm{Electricity}}{\to }2{\mathrm{H}}_2\left(\mathrm{g}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right) \\ \left(\mathrm{Water}\right)\left(\mathrm{Hydrogen}\right)\left(\mathrm{Oxygen}\right) \end{gathered}$$
• In the reaction shown above, one reactant i.e. water is breaking into more than one product i.e. Hydrogen and Oxygen which indicates that it is a decomposition reaction.

Therefore, splitting up of water molecule into hydrogen and oxygen, on passing electric current, is a decomposition reaction.