Edexcel IAL Chemistry A2 14.19 Buffer pH from data
Edexcel IAL Chemistry A2 14.19 Buffer pH from data
Work in moles when solutions are mixed, identify acid and conjugate base amounts after reaction and then apply Ka or Henderson-Hasselbalch consistently.
How this is tested
- Calculate buffer pH from Ka or pKa using the acid-to-conjugate-base ratio.
- Find moles after partial neutralisation before substituting into the buffer expression.
- Rearrange Ka to determine biological or inorganic buffer ion ratios from a pH value.