Difference between revisions of "Hydrogen Ion (Chemistry)"
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==Key Stage 4== | ==Key Stage 4== | ||
===Meaning=== | ===Meaning=== | ||
| − | A '''Hydrogen ion''', sometimes called a '''proton''', is a [[Positive Ion|positive ion]] of [[Hydrogen]] found in [[acid]] [[solution]]s. | + | A '''Hydrogen ion''' ('''H<sup>+</sup>'''), sometimes called a '''proton''', is a [[Positive Ion|positive ion]] of [[Hydrogen]] found in [[acid]] [[solution]]s. |
===About Hydrogen Ions=== | ===About Hydrogen Ions=== | ||
Revision as of 11:09, 6 January 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)