Question

Complete the following ionic equations in reference to electrolysis and electroplating.

${\mathrm{H}}^{+}+\mathrm{\_\_\_\_\_\_}\to \mathrm{\_\_\_\_\_\_\_}$

Answer 1

Electrode reaction

• Hydrogen ions,${\mathrm{H}}^{+}$, being the only positively charged ions, migrate to the cathode, since the cathode is a reservoir of electrons.
• ${\mathrm{H}}^{+}$ gains an electron and becomes a neutral hydrogen atom.

${\mathrm{H}}^{+}+\mathbf{}{\mathbf{e}}^{\mathbf{-}}\to \mathbf{H}$