Which of the following is a commonly used reagent for detecting the presence of chloride ions in a salt?
Silver nitrate
Potassium dichromate
Potassium permanganate
Sodium hydroxide
Silver nitrate is a commonly used reagent for detecting the presence of chloride ions in salt. When silver nitrate is added to a solution containing chloride ions, a white precipitate of silver chloride is formed. This reaction is highly specific for chloride ions and is widely used in qualitative salt analysis.
Incorrect options:
2) Potassium dichromate: Potassium dichromate is not a reagent used for detecting chloride ions. It is commonly used as an oxidizing agent and in the determination of organic compounds.
3) Potassium permanganate: Potassium permanganate is not a reagent used for detecting chloride ions. It is a strong oxidizing agent used for the determination of reducing agents.
4) Sodium hydroxide: Sodium hydroxide is not a reagent used for detecting chloride ions. It is a strong base used in the identification of acidic and basic radicals in salt analysis.