In chemistry, autoprotolysis is a chemical reaction in which a proton is transferred between two identical molecules, one of which acts as a Brønsted acid, releasing a proton which is accepted by the other molecule acting as a Brønsted base.[1] For example, water undergoes autoprotolysis in the self-ionization of water reaction. It is a type of molecular autoionization.
- 2 H2O ⇌ OH− + H3O+
Any solvent that contains both acidic hydrogen and lone pairs of electrons to accept H+ can undergo autoprotolysis.
For example, ammonia in its purest form may undergo autoprotolysis:
- 2 NH3 ⇌ NH−2 + NH+4
Another example is acetic acid:
- 2 CH3COOH ⇌ CH3COO− + CH3COOH+2
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AUTOPROTOLYSIS | AUTOIONIZATION | SELF-IONIZATION | AUTOPROTOLYSE
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Autoionization of water | Water, acids, and bases | Biology | Khan Academy
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Autoprotolyse von Wasser - pH und pOH -Wert
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References
- ^ IUPAC, Compendium of Chemical Terminology, 2nd ed. (the "Gold Book") (1997). Online corrected version: (2006–) "autoprotolysis". doi:10.1351/goldbook.A00531