Question

Define electrochemical reaction.

Answer 1

Electrochemical reaction - The reaction that occurs by the passage of an electric current or absorption of electric current is called an electrochemical reaction.

Example - Electrolysis of water which forms hydrogen (H₂) and Oxygen (O₂) gas.

$$\begin{gathered} 2{\mathrm{H}}_2\mathrm{O}\left(\mathrm{l}\right)\stackrel{\mathrm{electric}\mathrm{current}}{\to }2{\mathrm{H}}_2\left(\mathrm{g}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right) \\ \mathrm{Water}\mathrm{Hydrogen}\mathrm{Oxygen} \end{gathered}$$