Contents
Key Stage 4
Meaning
A Hydrogen ion, sometimes called a proton, is a positive ion of Hydrogen found in acid solutions.
About Hydrogen Ions
Foundation
- When an acid compound dissolves in water it forms Hydrogen ions.
- Hydrogen ions are responsible for the corrosive properties of acids.
Higher
- As the pH of a solution decreases by 1 the Hydrogen ion concentration increases by a factor of 10.
Examples
- HCl(s) → H+(aq)+Cl-(aq)
- H2SO4(s) ⇌ H+(aq)+HSO4-(aq)
- HNO3(s) ⇌ H+(aq)+NO3-(aq)
- H2CO3(s) ⇌ H+(aq)+HCO3-(aq)
- H3PO4(s) ⇌ H+(aq)+H2PO4-(aq)
- CH3COOH(s) ⇌ H+(aq)+CH3COO-(aq)