Chemistry A-Level
pH, pKa and logarithmic relationships
What pH, pKa and logarithmic relationships means in Chemistry A-Level, as defined for OCR.
Definition of pH, pKa and logarithmic relationships
Check what you remember
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Reference: OCR
pH is the negative logarithm to base ten of the hydrogen ion concentration, pKa = −log Ka, and pH = pKa + log([A⁻]/[HA]).
Topics that use pH, pKa and logarithmic relationships
- 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 pH, pKa and logarithmic relationships in the exam
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