Determination of Chlorinity of Water without the Use of Chromate Indicator

Figure 3

(a) Titration curves of 40.00 mL of 0.1 M NaCl with a 0.1 M AgNO₃ solution at two different bisulfite concentrations: (a) 0.50 mM (■, initial pH 8.20), (b) 5.0 mM (○, initial pH 6.67). (b) Titration curves of 40.00 mL of 0.1 M NaCl with a 0.1 M AgNO₃ solution in the presence of 5.0 mM bisulfite at two different initial pH values: (a) 7.12 (○), (b) 6.67 (■).

(a)

(b)