Chemistry GCSE
excess
What excess means in Chemistry GCSE, as defined for AQA.
Definitions of excess
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Reference: AQA
Adding the insoluble solid until it is in excess means the acid is fully neutralised and no unreacted acid remains.
More of a reactant is present than is needed to react with the other reactant.
Topics that use excess
- Limiting reactants (HT only) (AQA GCSE)
- Soluble salts (AQA GCSE)
Related terms
- Acid reactions with insoluble bases
- Crystallisation
- Excess solid method
- Filtration
- Filtration and crystallisation
- Hazard control and apparatus choice
- Limiting reactant
- Mole ratio
Using excess in the exam
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