BRAINCAKEAcids and Bases
When an acid is added to water it dissociates into H+ ions and anions. For example:
HCl(g) + aq → H+(aq) + Cl-(aq) The proton or hydrogen ion released is donated to a water molecule which acts as a base.
H+(aq) + H2O(l) → H3O+(aq)
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Key terms in this lesson
- redox reaction
- A reaction in which oxidation and reduction occur together, with electrons transferred from one species to another.
More in Acids, Bases and Buffers
- Acids and Bases
- Conjugate Acid-Base Pairs
- Strong and Weak Acids and Bases
- The Acid Dissociation Constant Ka
- pH
- Calculating the pH of a Strong Acid
- Calculating the pH of a Weak Acid
- The Ionic Product of Water Kw
All 16 lessons in Acids, Bases and Buffers · All Edexcel A-level Chemistry topics