Which method is used for chloride determination according to Schales and Schales?

Which method is used for chloride determination according to Schales and Schales?

• A. Schales and Schales chloride method
• B. Potentiometric titration
• C. Spectrophotometric titration
• D. Karl Fischer titration

Answer: (A)

Chloride determination by Schales and Schales is an argentometric titration. In this approach, silver ions from silver nitrate react with chloride ions in the sample to form insoluble silver chloride. The endpoint is detected with an indicator system (commonly a chromate indicator) that reveals when all chloride has been precipitated, typically by a faint color change due to the formation of silver chromate. The volume of silver nitrate used, along with its concentration and the sample volume, directly gives the chloride amount because the reaction is 1:1 between silver ions and chloride ions. This classic method is specifically described by Schales and Schales for chloride analysis.

Chloride determination by Schales and Schales is an argentometric titration. In this approach, silver ions from silver nitrate react with chloride ions in the sample to form insoluble silver chloride. The endpoint is detected with an indicator system (commonly a chromate indicator) that reveals when all chloride has been precipitated, typically by a faint color change due to the formation of silver chromate. The volume of silver nitrate used, along with its concentration and the sample volume, directly gives the chloride amount because the reaction is 1:1 between silver ions and chloride ions. This classic method is specifically described by Schales and Schales for chloride analysis.