Gradual addition of `KI` solution of `Bi(NO_(3))_(3)` solution intially produces a dark brown precipitate which dissolves in excess of `KI` to give a clear yellow solution. Write chemical eqautions for the above reactions.

Gradual addition of KI solution to Bi(NO_3)_(3) solution initially produces a dark brown precipitate which dissolves in excess of KI to give a clear yellow solution. Write chemical equation for the above reactions.

O_(3) with KI solution produces

When a KI solution is added to a metal nitrate, a black precipitate is produced which dissolves in an excess of KI to give an organge solution. The metal ion is:

Addition of HCl to an aqueous solution of Pb(NO_(3))_(2) gives a

A white substance (A) reacts with dilute H_(2)SO_(4) to produce a colourless suffocating gas (B) and a colourless solution (C )/ The reaction of gas (B) with potassium iodate and starch solution produce a blue colour solution. Aqueous Solution of (A) gives a white precipitate with BaCl_(2) solution which is soluble in dilute HCl . Addition of aqueous NH_(3) or NaOH to (C ) produced first a precipitate which dissolves in excess of the respective reagent to poduced a clear solution. Similarly addition of excess of potassium ferrocyanide to (C ) produced a precipitate (D) which also dissolves in aqeous NaOH giving a clear solution. Identify (A),(B),(C ) and (D ). Write the equation of the reactions involved.