Edexcel IAL Chemistry A2 16.16 uncertainty in redox titration results
Edexcel IAL Chemistry A2 16.16 uncertainty in redox titration results
Use twice the burette reading uncertainty for a titre, add apparatus percentage uncertainties and compare the total uncertainty with the quoted significant figures.
How this is tested
- Calculate percentage uncertainty for titres, balances, pipettes and volumetric flasks.
- Add apparatus uncertainties to estimate the total percentage uncertainty.
- Judge whether a final percentage result is quoted to too many significant figures.