Abstract:
This attempt was taken in order to estimate the uncertainties associated in acidity
determinations.Three titrimetric methods were used. The most important sources of
uncertainty, such as, the uncertainty of pH measurements, accuracy of volume
measurementsand the uncertainty of weighing were discussed using appropriate cause and
effectdiagrams.It was found from the results that the major contribution towards the final
valuewasfromthe volume delivery uncertainty. Second major contribution was found to be
from the weighing measurements. Finally the combined uncertainty contributions on the
finaltest results of the three methods and the possibility of reducing the overall uncertainty
wereaddressed.
