Question

A red coloured mixed oxide (X) on treatment with concentrate $HN{O}_3$ gives a compound (Y). (Y) with HCl, produces a chloride compound (Z) which can also be produced by treating (X) with concentrate HCl. Compounds (X), (Y) and (Z) will be :

• A. $M{n}_3{O}_4,Mn{O}_2,MnC{l}_2$
• B. $P{b}_3{O}_4,Pb{O}_2,PbC{l}_2$
• C. $F{e}_3{O}_4,F{e}_2{O}_3,FeC{l}_2$
• D. $F{e}_3{O}_4,F{e}_2{O}_3,FeC{l}_3$

Answer 1

The correct option is B $P{b}_3{O}_4,Pb{O}_2,PbC{l}_2$

Pb₃O₄ + 4 HNO₃ = 2 Pb(NO₃)₂ + PbO₂ + 2 H₂O

PbO₂ + 4 HCl = Cl₂ + 2 H₂O + PbCl₂

_So

(X), (Y) and (Z) will be $P{b}_3{O}_4$,$Pb{O}_2$,$PbC{l}_2$,

Hence option B is correct.