The correct answer is B. Calcium hypochlorite.
Calcium hypochlorite is a chemical compound with the formula Ca(ClO)2. It is a white, deliquescent solid that is used as a bleaching agent, disinfectant, and water treatment agent. It is also known as bleaching powder, chloride of lime, and chlorinated lime.
Calcium hypochlorite is produced by the reaction of calcium hydroxide with chlorine gas. The reaction is exothermic, and the product is a white, deliquescent solid.
Calcium hypochlorite is a strong oxidizing agent. It reacts with organic matter to form chlorinated compounds, which are responsible for its bleaching and disinfecting properties. Calcium hypochlorite is also a strong base, and it reacts with acids to form salts.
Calcium hypochlorite is used in a variety of applications, including:
- Bleaching: Calcium hypochlorite is used to bleach paper, textiles, and other materials.
- Disinfection: Calcium hypochlorite is used to disinfect water, swimming pools, and other surfaces.
- Water treatment: Calcium hypochlorite is used to treat water for drinking, irrigation, and industrial purposes.
- Agriculture: Calcium hypochlorite is used as a pesticide to control insects and other pests.
- Cosmetics: Calcium hypochlorite is used in some cosmetics to whiten teeth and skin.
Calcium hypochlorite is a hazardous substance, and it should be handled with care. It can cause skin and eye irritation, and it can be harmful if swallowed. It is also a respiratory irritant, and it can cause respiratory problems if inhaled.
If you are exposed to calcium hypochlorite, you should immediately wash the affected area with soap and water. If you get calcium hypochlorite in your eyes, you should flush them with water for at least 15 minutes. If you swallow calcium hypochlorite, you should call a poison control center or go to the emergency room immediately.
Calcium hypochlorite should be stored in a cool, dry place. It should be kept away from heat, sparks, and open flames. It should also be kept away from acids and other oxidizing agents.