The Acidic Environment > 3. Acids >
Identify acids including acetic (ethanoic), citric (2-hydroxypropane-1,2,3-tricarboxylic), hydrochloric and sulfuric acid
| Acid | Acetic acid | Citric acid | Hydrochloric acid | Sulfuric acid |
| Formula | CH3COOH | C6H8O7 | HCl (aq) | H2SO4 |
| Proper name | Ethanoic acid | 2-hydroxypropane-1,2,3-tricarboxylic acid | – | – |
| Strong/Weak | Weak | Weak | Strong | Strong |
| Description | Colourless liquid with a strong odour | White crystalline solid | Colourless acid that forms when hydrogen chloride gas dissociates in water | Thick colourless liquid |
| Where found | Vinegar | Citrus fruits (e.g. lemons) | Produced industrially and in human stomach | Produced industrially and found in acid rain |