Analysis of a spring water

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Determination of Cl- ions: complexometric/colorimetric titration with Hg2+


Equipment and reagents

  • Standard laboratory equipment, in particular: analytical scale, graduated burette, glassware, Pasteur pipettes, magnetic stirrer, magnetic stir bar.
  • Bromophenol blue (pH indicator)
  • Diphenylcarbazone
  • Nitric acid solution at 0.5 mol/L and 0.05 mol/L
  • Mercury solution at 0.0071 mol/L (i.e. 0.0142 N)
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