Question

The ion that cannot be precipitated by both HCl and $H_2 S$ is

• A. $Pb^{2-}$
• B. $Cu^+$
• C. $Ag^+$
• D. $Sn^{2+}$

Answer 1

Answer: (C)

$Ag^+$

Answer 2

$Ag^+$ is precipitated by HCl only while all others are precipitated by passing $H_2 S$ in the presence of HCl.