Question

Electrolysis of water is a --------- reaction.

Answer 1

• The reaction in which a single compound splits into two or more simpler substances is known as decomposition reaction.
• Here the decomposition reaction taking place in presence of electricity is called electrolysis.
• Electrolysis of water 2H₂O (l)$\stackrel{electricity}{\to }$ 2H₂(g) + O₂(g)
• The products formed are H₂ and O₂ in the ratio 2:1.
• Therefore, electrolysis of water is a decomposition reaction.