An alkali is a substance that releases hydroxide ions OH- in solution.NaOH(aq) + HNO3(aq) → NaNO3 (aq) + H2O(l)OH-(aq) + H+(aq) → H2O(l)These reactions are neutralisation reactions but are not classified as redox reactions.Single displacement reactions are redox reactions. Double displacement reactions are not redox reactions because there is no transfer of electrons from one species to another.
Reactions of Acids with alkalis
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Specification: Edexcel Chemistry (8CH0), AS-level, Topic 4B: The elements of Group 7 (halogens) and Topic 3: Redox I. Topic: Types of Reaction.
Key terms in this lesson
- neutralisation reaction
- A reaction between an acid and a base in which hydrogen ions are removed to form water.
- redox reaction
- A reaction in which oxidation and reduction happen together, with electrons transferred between the species involved.
More in Types of Reaction
- Metal Displacement Reactions
- Metal Displacement Reactions in the Solid State
- Halogen Displacement Reactions
- Precipitation Reactions
- Reactions of Acids with Metals
- Reactions of Acids with Insoluble Bases
- Reactions of Acids with Carbonates and Hydrogen Carbonates
All 8 lessons in Types of Reaction · All Edexcel AS-level Chemistry topics