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) | ||
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: H<sub>3</sub>PO<sub>4</sub>(aq) ⇌ H<sup>+</sup>(aq)+H<sub>2</sub>PO<sub>4</sub><sup>-</sup>(aq) | : H<sub>3</sub>PO<sub>4</sub>(aq) ⇌ H<sup>+</sup>(aq)+H<sub>2</sub>PO<sub>4</sub><sup>-</sup>(aq) | ||
: CH<sub>3</sub>COOH(aq) ⇌ H<sup>+</sup>(aq)+CH<sub>3</sub>COO<sup>-</sup>(aq) | : CH<sub>3</sub>COOH(aq) ⇌ H<sup>+</sup>(aq)+CH<sub>3</sub>COO<sup>-</sup>(aq) | ||
+ | |||
+ | ===References=== | ||
+ | ====AQA==== | ||
+ | |||
+ | :[https://www.amazon.co.uk/gp/product/0198359381/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359381&linkCode=as2&tag=nrjc-21&linkId=47c8d1ae58d8b3a5e2094cd447154558 ''Hydrogen ions, pages 99, 108, GCSE Chemistry; Third Edition, Oxford University Press, AQA ''] | ||
+ | |||
+ | ====Edexcel==== | ||
+ | |||
+ | :[https://www.amazon.co.uk/gp/product/1782948147/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948147&linkCode=as2&tag=nrjc-21&linkId=f63dcd8345f4e49c717b39a228a36c7c ''Hydrogen ions, pages 118, 120, 122, 123, GCSE Chemistry, CGP, Edexcel ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1782945725/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945725&linkCode=as2&tag=nrjc-21&linkId=694be7494de75af3349537d34e13f7f0 ''Hydrogen ions, pages 43, 44, GCSE Chemistry; The Revision Guide, CGP, Edexcel ''] | ||
+ | |||
+ | ====OCR==== | ||
+ | :[https://www.amazon.co.uk/gp/product/1782945695/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945695&linkCode=as2&tag=nrjc-21&linkId=ceafcc80bcad6b6754ee97a0c7ceea53 ''Hydrogen ions, page 112, Gateway GCSE Combined Science; The Revision Guide, CGP, OCR ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/0198359829/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359829&linkCode=as2&tag=nrjc-21&linkId=90e8d7b4f039d53035238fa0320fe00b ''Hydrogen ions, pages 118-119, Gateway GCSE Chemistry, Oxford, OCR ''] | ||
+ | :[https://www.amazon.co.uk/gp/product/1782945679/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945679&linkCode=as2&tag=nrjc-21&linkId=a2db42f7b4bdf10cafaafa3bb9120940 ''Hydrogen ions, pages 43, 44, Gateway GCSE Chemistry; The Revision Guide, CGP, OCR ''] |
Latest revision as of 15:00, 12 December 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)
References
AQA
Edexcel
- Hydrogen ions, pages 118, 120, 122, 123, GCSE Chemistry, CGP, Edexcel
- Hydrogen ions, pages 43, 44, GCSE Chemistry; The Revision Guide, CGP, Edexcel