Influence of AgCl precipitates on the precipitation titration of sodium chloride by constant-current coulometry.
The precipitation titration of sodium chloride with electrogenerated silver ion was studied. The production of a precipitate of silver chloride had a significant effect on the titration results because the precipitate involved unreacted chloride or unreacted silver ion. The accuracy of the method was investigated by changing the introduction time of a sodium chloride solution to the coulometric cell during the process of electrolysis, and examining the dependency on the sample size. The accuracy of the measurement of the precipitation titration is discussed.
Asakai
Toshiaki
T
National Institute of Technology and Evaluation, Tokyo, Japan. asakai-toshiaki@nite.go.jp
Hara
Hisao
H
Murayama
Mariko
M
Tanaka
Tatsuhiko
T
D001331:Automation; D011232:Chemical Precipitation; D002623:Chemistry Techniques, Analytical / Q000379:methods*; D003124:Colorimetry / Q000295:instrumentation* / Q000379:methods*; D004572:Electrolysis; D004867:Equipment Design; D007477:Ions; D015203:Reproducibility of Results; D012107:Research Design; D018030:Silver Compounds / Q000737:chemistry*; D012965:Sodium Chloride / Q000737:chemistry*; D017186:Titrimetry / Q000379:methods
D007477:Ions; D018030:Silver Compounds; D012965:Sodium Chloride; C037548:silver chloride