Edexcel IAL Chemistry A2 14.20 Buffer preparation calculations
Edexcel IAL Chemistry A2 14.20 Buffer preparation calculations
Start from the target pH and Ka or pKa, rearrange for the conjugate-base-to-acid ratio and then convert the required amount into moles, mass or volume.
How this is tested
- Rearrange Ka or Henderson-Hasselbalch to find the required conjugate-base amount.
- Convert the required buffer ratio into a salt mass, mole amount or solution volume ratio.