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Write balanced chemical equations for th...

Write balanced chemical equations for the following statements :
(i) Bleaching powder is kept open in air .
(ii) Blue crystals of copper sulphate are heated.
(iii) Chlorine gas is passed through dry slaked lime.
(iv) Carbon dioxide gas is passed through lime water .

Text Solution

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(i) `underset(("Bleaching powder"))(CaOCl_(2)(S))+underset(("Carbon dioxide"))(CO_(2)(g))rarrunderset(("Calcium carbonate"))(CaCO_(3)(S))underset (("Chlorine"))(Cl_(2)(g))`
(ii) `underset (("Blue"))(CuSO_(4).)5H_(2)Ooverset("Heat")rarr underset(("White"))(CuSO_(4))+5H_(2)O`
`underset(("Dry slaked lime"))(Ca(OH)_(2))+underset(("Chlorine"))(Cl_(2))rarrunderset(("Bleaching powder"))(CaOCl_(2))+H_(2)O`
(iv) `underset(("Lime water"))(Ca(OH)_(2)+)CO_(2)rarr underset("Calcium carbonate (Milky)")(CaCO_(3)+H_(2)O)`
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