Chemistry A-Level
Validity of weak-acid approximations
What Validity of weak-acid approximations means in Chemistry A-Level, as defined for OCR.
Definition of Validity of weak-acid approximations
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Reference: OCR
The approximations work well only when the acid is weak enough that a small fraction dissociates, and become unsafe when a significant fraction of the acid has dissociated.
Topics that use Validity of weak-acid approximations
- Acids, bases and buffers (OCR A-Level)
Related terms
- Acid dissociation constant Ka
- acidic buffer
- Amphiprotic
- basic buffer
- Basicity
- Buffer action against added acid and alkali
- Buffer action and pH resistance
- Calibration with buffer solutions
Using Validity of weak-acid approximations in the exam
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