Question
Give the properties and uses of Bleaching Powder.
✓
Answer
- Bleaching powder is a yellowish-white coloured solid substance.
- Its chemical name is Calcium oxychloride.
- It has a strong odour of chlorine gas.
- It is used for disinfection of drinking water at the water works and the water in the swimming pool.
- It is used for bleaching of cloth.
- It is used for disinfection by the road side and garbage sites.
- Dilute sulphuric acid and dilute hydrochloric acid react rapidly with bleaching powder to release chlorine gas completely.$CaOCl_2+H_2 SO_4 \rightarrow CaSO_4+Cl_2 \uparrow+H_2 O CaOCl 2+2 HCl \rightarrow CaCl_2+Cl_2 \uparrow+H_2 O$
- Calcium oxychloride reacts slowly with carbon dioxide to form calcium carbonate and chlorine.$CaOCl_2 + CO_2 → CaCOs + Cl_2↑$
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