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6-2.Equilibrium-II (Ionic Equilibrium)
medium
A very dilute acidic solution of $Cd^{2+}$ and $Ni^{2+}$ gives only yellow ppt. of $CdS$ on passing $H_2S$, this is due to
A
Solubility product $(K_{sp} )$ of $CdS$ is more than that of $NiS$.
B
Solubility product $(K_{sp} )$ of $CdS$ is less than that of $NiS$.
C
$Cd^{2+}$ belong to $ll\,B$ group while $Ni^{2+}$ belongs to $IVth$ group.
D
$CdS$ is insoluble in yellow ammonium sulphide $(YAS)$.
Solution
Basic radicals are classified on the basis of increasing order of $K_{sp}$. $Cd^{2+}$ in $II$ group while $Ni^{2-}$ in $IV$ group.
Standard 11
Chemistry
