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An aqueoussolution containing 1 mol of HgI_(2) and 2 molof Nal is orange in colour .Onadditionod excessNaI , thesolutionbecomescolourless .Theorangecolour reappearsonsubsequent addition of NaOCl. |
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Answer» Solution :`HgI_(2)` is having orange / scarletcolour it dissolvein sodiumiodidedue to theformation of a complex . `HgI_(2) + 2Nal RARR Na_(2)HgI_(4)` with `NaOCI` AGENT a PRECIPITATE of `HgI_(2)` is FORMED `3Na_(2)HgI_(4) + 2NaOCI + 2H_(2)O rarr 3HgI_(2) + 2NaI_(3) + 4NaOH + 2NaCI` |
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