Difference between revisions of "Hydrogen Ion (Chemistry)"
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Some [[acid]]s are so strong that all of the [[Hydrogen Ion (Chemistry)|Hydrogen ions]] become dissociated from the rest of the [[compound]]. | Some [[acid]]s are so strong that all of the [[Hydrogen Ion (Chemistry)|Hydrogen ions]] become dissociated from the rest of the [[compound]]. | ||
: HCl(aq) → H<sup>+</sup>(aq)+Cl<sup>-</sup>(aq) | : HCl(aq) → H<sup>+</sup>(aq)+Cl<sup>-</sup>(aq) | ||
− | In many [[acid]]s not all of the [[molecule]]s will lose their [[Hydrogen Ion (Chemistry)|Hydrogen ions]] and this process can be reversed leaving them in a state of [[ | + | In many [[acid]]s not all of the [[molecule]]s will lose their [[Hydrogen Ion (Chemistry)|Hydrogen ions]] and this process can be reversed leaving them in a state of [[Dynamic Equilibrium|equilibrium]]: |
: H<sub>2</sub>SO<sub>4</sub>(aq) ⇌ H<sup>+</sup>(aq)+HSO<sub>4</sub><sup>-</sup>(aq) | : H<sub>2</sub>SO<sub>4</sub>(aq) ⇌ H<sup>+</sup>(aq)+HSO<sub>4</sub><sup>-</sup>(aq) | ||
: HNO<sub>3</sub>(aq) ⇌ H<sup>+</sup>(aq)+NO<sub>3</sub><sup>-</sup>(aq) | : HNO<sub>3</sub>(aq) ⇌ H<sup>+</sup>(aq)+NO<sub>3</sub><sup>-</sup>(aq) |
Revision as of 14:10, 5 April 2019
Contents
Key Stage 4
Meaning
A Hydrogen ion (H+), 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
Some acids are so strong that all of the Hydrogen ions become dissociated from the rest of the compound.
- HCl(aq) → H+(aq)+Cl-(aq)
In many acids not all of the molecules will lose their Hydrogen ions and this process can be reversed leaving them in a state of equilibrium:
- H2SO4(aq) ⇌ H+(aq)+HSO4-(aq)
- HNO3(aq) ⇌ H+(aq)+NO3-(aq)
- H2CO3(aq) ⇌ H+(aq)+HCO3-(aq)
- H3PO4(aq) ⇌ H+(aq)+H2PO4-(aq)
- CH3COOH(aq) ⇌ H+(aq)+CH3COO-(aq)