The treatment of water with bleaching powder is known as-a)prechlorin...
A mixture of lime and calcium chloride, it is marketed as chlorine powder or bleaching powder for water treatment and as a bleaching agent. It is also known as chlorinated lime. This compound is relatively stable and has greater available chlorine than sodium hypochlorite (liquid bleach).
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The treatment of water with bleaching powder is known as-a)prechlorin...
Treatment of water with bleaching powder is known as hydrochlorination.
Hydrochlorination is a process in which water is treated with bleaching powder (calcium hypochlorite) to disinfect it. This process involves the addition of a calculated amount of bleaching powder to the water to form hypochlorous acid, which is a powerful disinfectant.
The process of hydrochlorination involves the following steps:
1. Preparation of bleaching powder solution: A solution of bleaching powder is prepared by dissolving a calculated amount of bleaching powder in water.
2. Addition of bleaching powder solution to water: The bleaching powder solution is added to the water to be treated.
3. Formation of hypochlorous acid: When bleaching powder is added to water, it reacts with water to form hypochlorous acid (HOCl) and calcium hydroxide (Ca(OH)2).
4. Disinfection of water: Hypochlorous acid is a powerful disinfectant that kills bacteria, viruses, and other harmful microorganisms present in water.
5. Neutralization of excess chlorine: After the desired level of disinfection is achieved, any excess chlorine is neutralized using a dechlorinating agent.
Hydrochlorination is an effective and economical method of disinfecting water. It is widely used in municipal water treatment plants, swimming pools, and other applications where water disinfection is required.