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Which one is the active constituent of bleaching powder?A. `CaCI_(2)`B. `CaOCl_(2)`C. `Ca(OCI)_(2)`D. `CaO_(2)Cl` |
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Answer» Correct Answer - 3 Bleaching poeder (also called chloride of line) is a whitish powder, consisting mainly of calcium hypochlorite, `Ca(Ocl)_(2)`. It is prepared by the action of chlorine on a suspension of calcium hydoxide: `2Cl_(2)(g)+2Ca(OH)_(2)(s) rarr Ca(OCl)_(2).2H_(2)O(s)+CaCl_(2)(aq.)` the action of dilute acids liberates chlorine, which acts as an oxidizing agent and so bleaches the material. |
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