314901 \(\mathrm{K}_{\mathrm{sp}}(\mathrm{AgCl})>\mathrm{K}_{\mathrm{sp}}(\mathrm{AgBr})>\mathrm{K}_{\mathrm{sp}}(\mathrm{AgI})\). This means that

314902 The \(\mathrm{K}_{\text {sp }}\) of \(\mathrm{CuS}, \mathrm{Ag}_{2} \mathrm{~S}\) and \(\mathrm{HgS}\) are \(10^{-31}, 10^{-44}\) and \(10^{-54}\) respectively. The solubility of these sulphides are in the order :

314903 Assertion :
To precipitate the cations of fourth group in qualitative analysis, medium is made alkaline before passing \({{\text{H}}_{\text{2}}}{\text{S}}\) gas.
Reason :
This is done to suppress the ionisation of \({{\text{H}}_{\text{2}}}{\text{S}}\).

314904 The minimum volume of water required for 0.1 \(\mathrm{g}\) lead (II) chloride to get a saturated solution \({\rm{(}}{{\rm{K}}_{{\rm{sp}}}}\) of \({\rm{ PbC}}{{\rm{l}}_2} = 3.2 \times {10^{ - 8}}{\mkern 1mu} {\mkern 1mu} ;\) atomic mass of \({\rm{Pb = 207 u)}}\)

314905 Why only \({\text{A}}{{\text{s}}^{ + 3}}\) gets precipitated as \({\rm{A}}{{\rm{s}}_{\rm{2}}}{{\rm{S}}_{\rm{3}}}\) and not \(\mathrm{Zn}^{2+}\) as \(\mathrm{ZnS}\) when \({{\text{H}}_2}{\text{S}}\) is passed through an acidic solution containing \(\mathrm{As}^{+3}\) and \(\mathrm{Zn}^{+2}\) ?

314901 \(\mathrm{K}_{\mathrm{sp}}(\mathrm{AgCl})>\mathrm{K}_{\mathrm{sp}}(\mathrm{AgBr})>\mathrm{K}_{\mathrm{sp}}(\mathrm{AgI})\). This means that

314902 The \(\mathrm{K}_{\text {sp }}\) of \(\mathrm{CuS}, \mathrm{Ag}_{2} \mathrm{~S}\) and \(\mathrm{HgS}\) are \(10^{-31}, 10^{-44}\) and \(10^{-54}\) respectively. The solubility of these sulphides are in the order :

314903 Assertion :
To precipitate the cations of fourth group in qualitative analysis, medium is made alkaline before passing \({{\text{H}}_{\text{2}}}{\text{S}}\) gas.
Reason :
This is done to suppress the ionisation of \({{\text{H}}_{\text{2}}}{\text{S}}\).

314904 The minimum volume of water required for 0.1 \(\mathrm{g}\) lead (II) chloride to get a saturated solution \({\rm{(}}{{\rm{K}}_{{\rm{sp}}}}\) of \({\rm{ PbC}}{{\rm{l}}_2} = 3.2 \times {10^{ - 8}}{\mkern 1mu} {\mkern 1mu} ;\) atomic mass of \({\rm{Pb = 207 u)}}\)

314905 Why only \({\text{A}}{{\text{s}}^{ + 3}}\) gets precipitated as \({\rm{A}}{{\rm{s}}_{\rm{2}}}{{\rm{S}}_{\rm{3}}}\) and not \(\mathrm{Zn}^{2+}\) as \(\mathrm{ZnS}\) when \({{\text{H}}_2}{\text{S}}\) is passed through an acidic solution containing \(\mathrm{As}^{+3}\) and \(\mathrm{Zn}^{+2}\) ?

314901 \(\mathrm{K}_{\mathrm{sp}}(\mathrm{AgCl})>\mathrm{K}_{\mathrm{sp}}(\mathrm{AgBr})>\mathrm{K}_{\mathrm{sp}}(\mathrm{AgI})\). This means that

314902 The \(\mathrm{K}_{\text {sp }}\) of \(\mathrm{CuS}, \mathrm{Ag}_{2} \mathrm{~S}\) and \(\mathrm{HgS}\) are \(10^{-31}, 10^{-44}\) and \(10^{-54}\) respectively. The solubility of these sulphides are in the order :

314903 Assertion :
To precipitate the cations of fourth group in qualitative analysis, medium is made alkaline before passing \({{\text{H}}_{\text{2}}}{\text{S}}\) gas.
Reason :
This is done to suppress the ionisation of \({{\text{H}}_{\text{2}}}{\text{S}}\).

314904 The minimum volume of water required for 0.1 \(\mathrm{g}\) lead (II) chloride to get a saturated solution \({\rm{(}}{{\rm{K}}_{{\rm{sp}}}}\) of \({\rm{ PbC}}{{\rm{l}}_2} = 3.2 \times {10^{ - 8}}{\mkern 1mu} {\mkern 1mu} ;\) atomic mass of \({\rm{Pb = 207 u)}}\)

314905 Why only \({\text{A}}{{\text{s}}^{ + 3}}\) gets precipitated as \({\rm{A}}{{\rm{s}}_{\rm{2}}}{{\rm{S}}_{\rm{3}}}\) and not \(\mathrm{Zn}^{2+}\) as \(\mathrm{ZnS}\) when \({{\text{H}}_2}{\text{S}}\) is passed through an acidic solution containing \(\mathrm{As}^{+3}\) and \(\mathrm{Zn}^{+2}\) ?

314901 \(\mathrm{K}_{\mathrm{sp}}(\mathrm{AgCl})>\mathrm{K}_{\mathrm{sp}}(\mathrm{AgBr})>\mathrm{K}_{\mathrm{sp}}(\mathrm{AgI})\). This means that

314902 The \(\mathrm{K}_{\text {sp }}\) of \(\mathrm{CuS}, \mathrm{Ag}_{2} \mathrm{~S}\) and \(\mathrm{HgS}\) are \(10^{-31}, 10^{-44}\) and \(10^{-54}\) respectively. The solubility of these sulphides are in the order :

314903 Assertion :
To precipitate the cations of fourth group in qualitative analysis, medium is made alkaline before passing \({{\text{H}}_{\text{2}}}{\text{S}}\) gas.
Reason :
This is done to suppress the ionisation of \({{\text{H}}_{\text{2}}}{\text{S}}\).

314904 The minimum volume of water required for 0.1 \(\mathrm{g}\) lead (II) chloride to get a saturated solution \({\rm{(}}{{\rm{K}}_{{\rm{sp}}}}\) of \({\rm{ PbC}}{{\rm{l}}_2} = 3.2 \times {10^{ - 8}}{\mkern 1mu} {\mkern 1mu} ;\) atomic mass of \({\rm{Pb = 207 u)}}\)

314905 Why only \({\text{A}}{{\text{s}}^{ + 3}}\) gets precipitated as \({\rm{A}}{{\rm{s}}_{\rm{2}}}{{\rm{S}}_{\rm{3}}}\) and not \(\mathrm{Zn}^{2+}\) as \(\mathrm{ZnS}\) when \({{\text{H}}_2}{\text{S}}\) is passed through an acidic solution containing \(\mathrm{As}^{+3}\) and \(\mathrm{Zn}^{+2}\) ?

314901 \(\mathrm{K}_{\mathrm{sp}}(\mathrm{AgCl})>\mathrm{K}_{\mathrm{sp}}(\mathrm{AgBr})>\mathrm{K}_{\mathrm{sp}}(\mathrm{AgI})\). This means that

314902 The \(\mathrm{K}_{\text {sp }}\) of \(\mathrm{CuS}, \mathrm{Ag}_{2} \mathrm{~S}\) and \(\mathrm{HgS}\) are \(10^{-31}, 10^{-44}\) and \(10^{-54}\) respectively. The solubility of these sulphides are in the order :

314903 Assertion :
To precipitate the cations of fourth group in qualitative analysis, medium is made alkaline before passing \({{\text{H}}_{\text{2}}}{\text{S}}\) gas.
Reason :
This is done to suppress the ionisation of \({{\text{H}}_{\text{2}}}{\text{S}}\).

314904 The minimum volume of water required for 0.1 \(\mathrm{g}\) lead (II) chloride to get a saturated solution \({\rm{(}}{{\rm{K}}_{{\rm{sp}}}}\) of \({\rm{ PbC}}{{\rm{l}}_2} = 3.2 \times {10^{ - 8}}{\mkern 1mu} {\mkern 1mu} ;\) atomic mass of \({\rm{Pb = 207 u)}}\)

314905 Why only \({\text{A}}{{\text{s}}^{ + 3}}\) gets precipitated as \({\rm{A}}{{\rm{s}}_{\rm{2}}}{{\rm{S}}_{\rm{3}}}\) and not \(\mathrm{Zn}^{2+}\) as \(\mathrm{ZnS}\) when \({{\text{H}}_2}{\text{S}}\) is passed through an acidic solution containing \(\mathrm{As}^{+3}\) and \(\mathrm{Zn}^{+2}\) ?