CL in industrial liquid caustic soda-
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Dear teachers, for chlorine ions in liquid caustic, using the Potentiometric Method with the Wonton 916 Ti-Touch device, what is a suitable value to use for potential assessment?
This post was last edited by qugd on 2017-1-19 at 10:41. It’s best to determine such issues through specific experiments one ownself. Because the concentration of the base, the concentration of the titrant, and the concentration of the chloride ions being analyzed all affect the selection criteria. Why can’t you conduct some conditional tests based on your own specific circumstances? In my opinion, for trace chloride ions in a large amount of base matrix, titration is not a suitable method; ion chromatography or ion-selective electrode methods would be better.
The condition tests have been conducted; the equivalence point either appears later or does not exist at all. The stability is currently low. A comparison with ion chromatography shows that the pH value has a significant impact, so it has been adjusted to around 7.
Your reply indicated that the concentration of the titrant has a significant impact; in the experiments, lower concentrations resulted in an indistinct or even absent equivalence point. Thank you, qugd, for pointing this out – thanks!