Analysis of a spring water
Determination of hydrogen carbonate ions by pH-metric and conductimetric titration
The concentration of hydrogen carbonate ions HCO3-(aq) can be determined using the difference between the complete alkalimetric title (CAT) and the alkalimetric title (AT).
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The pH of a mineral water whose AT is zero (no HO- nor CO32- in the solution) can be related in first approximation to the presence of HCO3- and CO2 dissolved in the solution. Knowing the concentration of HCO3- and the pH, it is therefore possible to determine the concentration of dissolved CO2.