A chloride salt solution acidified with dil. HNO₃ gives a curdy white precipitate, [A], on addition of AgNO₃. [A] on treatment with NH₄OH gives a clear solution, B.
(1) H[AgCl₃] & [Ag(NH₃)₂]Cl
(2) H[AgCl₃] & (NH₄)[Ag(OH)₂]
(3) AgCl & [Ag(NH₃)₂]Cl
(4) AgCl & (NH₄)[Ag(OH)₂]
