p-Block elementsHardBloom L3

Question

A red-coloured mixed oxide (X) on treatment with cone. HNO3 gives a compound (Y). (Y) with HCl, produces a chloride compound (Z) which can also be produced by treating (X) with cone. HCl.

Compounds (X) , (Y), and (Z) will be

Options

A.Mn3O4, MnO2, MnCl2
B.Pb3O4, PbO2, PbCl2
C.Fe3O4, Fe2O3, FeCl2
D.Fe3O4, Fe2O3, FeCl3

Solution

Sol. Pb3​O4​+4HNO3​→2Pb(NO3​)2​+PbO2​+2H2​O

PbO2​+HCl→PbCl2​+H2​O+Cl2​

Pb3​O4​+8HCl→4H2​O+3PbCl2​+Cl2​

X, Y and Z are Pb3​O4​,PbO2​,PbCl2​ respectively.

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