Gradual addition of KI solution to BI(NO 3 ) 3 sol

Question

Gradual addition of KI solution to BI(NO3)3 solution initially produces a dark brown precipitate which dissolves in excess of KI to give a clear yellow solution. Write chemical equations for the above reaction

Navjyot Kalra · Accepted Answer

At first Bi(NO3)3 hydrolyses to give nitric acid which, being an oxidizing agent, oxidizes potassium iodide liberating free iodine responsible for dark brown precipitate. Iodine dissolved in excess of potassium iodide forming soluble KI3 imparting yellow colour to solution.Bi(NO3)3 + H2O &rarr; [Bi(OH)(NO3)2] + HNO3NO3‑ + 4 H+ + 3e- &rarr; NO2 + 2H2O] * 2Ki + I2 &rarr; KI3 (yellow solution)

Inorganic Chemistry> Gradual addition of KI solution to BI(NO ...

Gradual addition of KI solution to BI(NO3)3 solution initially produces a dark brown precipitate which dissolves in excess of KI to give a clear yellow solution. Write chemical equations for the above reaction

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Navjyot Kalra

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Inorganic Chemistry> Gradual addition of KI solution to BI(NO ...

Gradual addition of KI solution to BI(NO3)3 solution initially produces a dark brown precipitate which dissolves in excess of KI to give a clear yellow solution. Write chemical equations for the above reaction

Amit Saxena , 10 Years ago

Navjyot Kalra

Provide a better Answer & Earn Cool Goodies

LIVE ONLINE CLASSES

Ask a Doubt

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