A red crystalline solid A reacts with nitric acid to form a chocolate-brown solid B insoluble in water. Both A and B reacts with HCl to form `PbCl_(2)`. A and B respectively are

Options

A. `PbO,PbO_(2)`
B. `Pb_(3)O_(4),PbO_(2)`
C. `PbO_(2),Pb_(3)O`
D. `PbO_(2),PbO`

Answer

B

Explanation

The reaction involved are
`underset("(A)")(2Pb_(3)O_(4))+4HNO_(3) to 2Pb(NO_(3))_(2)+2H_(2)O+underset("(B)")(PbO_(2))`
`underset("(A)")(Pb_(3)O_(4)+8HCl to 3PbCl_(2)+4H_(2)O+Cl_(2)`
`underset("(B)")(PbO_(2))+4HCl overset(Delta)toPbCl_(2)+2H_(2)O+Cl_(2)`