How is bleaching powder prepared?
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Bleaching powder is prepared by passing chlorine gas (Cl2) over slaked lime (Ca(OH)2). Ca(OH)2+Cl2→Ca(OCl)2+H2O. The industrial preparation of bleaching powder is done through Hansenclever method. ... First the dry slaked lime is fed into the Hasenclever plant through the hopper present in the uppermost cylinder.
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