1.

The gradiual addition of KJ solutionto Bi(NO_(3))_(3) solution identifyproduces a darkprecipitatewhichdissslovesin excess of KJ to give a yellowsolution.Writethechemicalequationfor the above reactions.

Answer»

Solution :The gradual additionof K! solution of` Bi(NO_(3))_(2)` solutioninitialyproduces darkbrownprecipitate which dissolve in EXCESS of Ki to give a YELLOWSOLUTION IODIDE isoxidesed to iodine whichdissolve in KI to give a yellow solution of `KI_(3)`
`Bi^(3+) +H_(2)O hArr Bi(OH)^(2+) +H^(o+)`
`[NO_(3)^(Theta) + 4H^(o+) + 3e^(Theta) NO + 2H_(2)O] xx2`
`[21^(Theta) rarr I_(2) + 2e^(Theta)] xx 3 `
`ulbar (2NO_(3)^(Theta) + 8H^(o+) + 61^(Theta) rarr 2NO + 4H_(2)O + 31_(2))`
`KI +I_(2) rarr KI_(3)`


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