Bleaching Powder Used for Disinfection in Swimming Pools

Whenever people walk to the swimming pool, they always smell a pungent odor, which is emitted by the reaction between water and bleach. The main components of bleaching powder are calcium chloride and calcium hypochlorite, among which only calcium hypochlorite is the effective ingredient of bleaching powder. Calcium hypochlorite can generate a substance called hypochlorous acid in water, which has oxidizing properties. People sprinkle bleach into swimming pools to use the oxidizing properties of the hypochlorous acid it generates to kill bacteria. The oxidizing properties of hypochlorous acid can not only be used for sterilization, but also for bleaching the colors of all colored substances to white. Therefore, a mixture of calcium chloride and calcium hypochlorite is called bleaching powder.

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