Chemistry - Salt Analysis Question with Solution | TestHub

${\mathrm{H}}_2\mathrm{S}$in presence of aqueous solution precipitates sulphide of$\mathrm{C}\mathrm{u}$and$\mathrm{H}\mathrm{g}$(IInd group) apart from$\text{P}{\text{b}}^{+2},\text{B}{\text{i}}^{+3},\text{C}{\text{d}}^{+2},\text{A}{\text{s}}^{+3},\text{S}{\text{b}}^{+3}$and$\text{S}{\text{n}}^{+2},\mathrm{ }\text{M}{\text{n}}^{2+},\text{N}{\text{i}}^{2+}$are of IVth group so cannot be precipitated by${\mathrm{H}}_2\mathrm{S}$.