Hydrogen Ion (Chemistry)

Key Stage 4

A Hydrogen ion, sometimes called a proton, is a positive ion of Hydrogen found in acid solutions.

When an acid compound dissolves in water it forms Hydrogen ions.

Hydrogen ions are responsible for the corrosive properties of acids.

As the pH of a solution decreases by 1 the Hydrogen ion concentration increases by a factor of 10.

HCl(s) → H⁺(aq)+Cl^-(aq)

H₂SO₄(s) → 2H⁺(aq)+SO₄^-2(aq)

HNO₃(s) → H⁺(aq)+NO₃^-(aq)

H₂CO₃(s) → 2H⁺(aq)+CO₃^-2(aq)

H₃PO₄(s) → 3H⁺(aq)+PO₄^-3(aq)

CH₃COOH(s) → H⁺(aq)+CH₃COO^-(aq)