Acetate
Acetate, also known as ethanoate, is the salt or ester of acetic acid (vinegar). It is also an ion of acetic acid. It is formed when acetic acid dissolves in water (which splits into an acetate anion and a hydron). The chemical formula is CH
3COO−
(also written as CH
3CO−
2 or C
2H
3O−
2) when it exists as an ion. Acetate salts turn brown when heated, and smell like acetic acid.
| Acetate | |
|---|---|
| |
| IUPAC name | Acetate |
Ethanoate | |
| Properties | |
| Molecular formula | CH3CO− 2 |
| Molar mass | 59 g mol-1 |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) | |
| Infobox references | |
Acetate esters
Acetate esters have the chemical formula CH
3COOR (where R is an organic group like an alkyl or aryl group). It is made when acetic acid reacts with an alcohol to make an acetic ester and water.
The reaction between acetic acid and ethanol gives ethyl acetate and water:
CH
3COOH + CH3OH ⇌ CH
3COOC
2H
5 + H2O
Acetate salts
Acetate salts are made when acetic acid reacts with a base (like sodium hydroxide).
The reaction between acetic acid and sodium hydroxide gives sodium acetate and water:
CH
3COOH + NaOH —> CH
3COONa + H2O
Examples
- methyl acetate: CH
3COOCH
3 - ethyl acetate: CH
3COOC
2H
5 - sodium acetate: CH
3COONa - potassium acetate: CH
3COOK
Acetate Media
- AcetateanioncanonicalformDskeletal
- AcetateesterDskeletal
The mixed acid fermentation pathway is characteristic of the family Enterobacteriaceae, which includes E. coli
Space-filling model of the acetate anion 
resonance hybrid of the acetate anion 
canonical forms of the acetate anion
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Related pages
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