A scaletcompound A is treated with concenbtrated HNO_(3)to gave achocolate brownprecipitate B. The precipitate is filtered and the filtrateisneurralised with NaOH Addition of KI to theresultingsolutiongives a yellowprecipitate C the brownprecipitate B on warmingwith concentrated HNO_(3) in the presence of Mn(NO_(3))_(2) produces a pinkcolouredsolutiondue to theformation of D identify A, B,C, and D write the reaction sequence.

A scaletcompound A is treated with concenbtrated HNO_(3)to gave achoco

1.	A scaletcompound A is treated with concenbtrated HNO_(3)to gave achocolate brownprecipitate B. The precipitate is filtered and the filtrateisneurralised with NaOH Addition of KI to theresultingsolutiongives a yellowprecipitate C the brownprecipitate B on warmingwith concentrated HNO_(3) in the presence of Mn(NO_(3))_(2) produces a pinkcolouredsolutiondue to theformation of D identify A, B,C, and D write the reaction sequence.
Answer» Solution :A : `Pb_(3)O_(4) B : PbO_(2) C : PbI_(2)O_(4) B : PB(MnO_(4))_(2)` Thepink colouredcompound is PRECIPITATE saltwhich is FORMED by the oxidationof maganese saltlead dioxide .Theyellow precipitate to be red lead . `underset((A))(Pb_(3)O_(4)+)4HNO_(3)rarrunderset((B))(PbO_(2)darr)+underset("Filtrate")(2Pb(NO_(3))_(2))+2H_(2)O` `Pb (NO_(3))_(2) +2KI rarr underset("Yellow"(C))(PbI_(2)darr)+2KNO_(3)` `5PbO_(2) +2MN(NO_(3))_(2) +4HNO_(3) rarr` `Pb(MnO_(4))_(2)+underset((D))(4Pb(NO_(3))_(2))+2H_(2)O`