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प्रश्न
How is bleaching powder prepared from slaked lime?
लघु उत्तरीय
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उत्तर
Bleaching powder is obtained by treating slaked lime with chlorine.
\[\ce{\underset{Slaked lime}{2Ca(OH)2} + 2Cl2 -> \underset{Calcium hypochlorite}{Ca(OCl)2} + CaCl2 + 2H2O}\]
\[\ce{\underline{\text{Ca}(\text{OCl}_2) + \text{CaCl}_2 + \text{Ca(OH)}_2 + 2\text{H}_2\text{O} \leftarrow \text{Ca}(\text{OCl}_2) . \text{CaCl}_2 . \text{Ca(OH)}_2 . 2\text{H}_2\text{O}}}\]
\[\ce{3Ca(OH)2 + 2Cl2 -> Ca(OCl2) * Ca(OH)2 * 2H2O}\]
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