Combined Science GCSE
Weak acid
What Weak acid means in Combined Science GCSE, as defined for AQA.
Definition of Weak acid
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Reference: AQA
An acid that is only partially ionised in aqueous solution, so a significant proportion of intact acid molecules remains.
Topics that use Weak acid
- Strong and weak acids (HT only) (AQA GCSE)
Related terms
- Balanced ionic equations for monoprotic and diprotic acids
- Comparing strong and weak acids at equal concentration
- Equilibrium between intact acid molecules and ions
- Lower H⁺(aq) concentration and less acidic behaviour
- Neutral solutions
- Production of H⁺(aq) ions and acidic properties
- The pH scale
- Acid strength and extent of ionisation
Using Weak acid in the exam
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