distinguishing reagent between silver and lead salts may be:

Options

A. `H_(2)S` gas followed by `H_(2)O_(2)`
B. Hot dilute HCl solution
C. `NH_(4)Cl` (solid) `+NH_(4)OH` solution
D. `(NH_(4))_(2)CO_(3)` solution.

Answer

A, B, C

Explanation

(A) both `Pb^(2)` and `Ag^(+)` salts give black ppt. with `H_(2)S` but turns white `(PbSO_(4))` with `H_(2)O_(2)` while `Ag_(2)S` does not.
(B). Both `Ag^(+)` and `Pb^(2+)` give white ppt with `Cl^(-)` in `NH_(4)Cl`, but AgCl dissolves in `NH_(4)OH` while `PbCl_(2)` does not.