What is used to dechlorinate water?

What is used to dechlorinate water?

• A. Sodium hypochlorite
• B. Sodium chloride
• C. Sodium hydroxide
• D. Sodium thiosulfate

Answer: (D)

Sodium thiosulfate is an effective dechlorinating agent commonly used to remove chlorine from water. When chlorine is added to water as a disinfectant, sodium thiosulfate reacts with free chlorine and forms a non-toxic compound. This reaction neutralizes the chlorine, making the water safe for various uses, especially when it is intended for swimming pools, aquariums, or in processes where chlorine could be harmful. In contrast, sodium hypochlorite is a chlorine compound used for disinfection but does not serve the purpose of removing chlorine. Sodium chloride, commonly known as table salt, does not have any properties for dechlorination. Sodium hydroxide, which is used to control pH levels, is also not suitable for removing chlorine from water. Therefore, sodium thiosulfate is the correct choice for effectively dechlorinating water.

Sodium thiosulfate is an effective dechlorinating agent commonly used to remove chlorine from water. When chlorine is added to water as a disinfectant, sodium thiosulfate reacts with free chlorine and forms a non-toxic compound. This reaction neutralizes the chlorine, making the water safe for various uses, especially when it is intended for swimming pools, aquariums, or in processes where chlorine could be harmful.

In contrast, sodium hypochlorite is a chlorine compound used for disinfection but does not serve the purpose of removing chlorine. Sodium chloride, commonly known as table salt, does not have any properties for dechlorination. Sodium hydroxide, which is used to control pH levels, is also not suitable for removing chlorine from water. Therefore, sodium thiosulfate is the correct choice for effectively dechlorinating water.