Addition of ammonium chloride to a solution containing ferric and magnesium ions is essential for selective precipitation of ferric hydroxide by aqueous ammonia.

Question

Addition of ammonium chloride to a solution containing ferric and magnesium ions is essential for selective precipitation of ferric hydroxide by aqueous ammonia. (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

ZnS is soluble in dil. HCl but CuS does not dissolve in dil. HCl.

Q. Addition of ammonium chloride to a solution containing ferric and magnesium ions is essential for selective precipitation of ferric hydroxide by aqueous ammonia.

$Z n S$ is soluble in dil. $H Cl$ but $C u S$ does not dissolve in dil. $H Cl$ .