Solubility product $(K_{sp})$ of the salts $MX\,,\, MX_2\,,\, M_3X$ at temperature $'T'$ are $4 \times 10^{-8}\,,\, 3.2 \times 10^{-14}$ and $2.7 \times 10^{-15}$ respectively. Solubilities of the salt at temperature $'T'$ are in the order

Concentration of $H _2 SO _4$ and $Na _2 SO _4$ in a solution is $1 M$ and $1.8 \times 10^{-2} M$, respectively. Molar solubility of $PbSO _4$ in the same solution is $X \times 10^{- Y } M$ (expressed in scientific notation). The value of $Y$ is. . . .

[Given: Solubility product of $PbSO _4\left(K_{s p}\right)=1.6 \times 10^{-8}$. For $H _2 SO _4, K_{a l}$ is very large and $\left.K_{a 2}=1.2 \times 10^{-2}\right]$

What mass of $AgI$ will dissolve in $1.0\, L$ of its saturated solution ? [Given $: K_{sp}(AgI) = 1.0\times10^{-16} ; (At\, wt.\, Ag = 108; I=127)$

If solubility of calcium hydroxide is $\sqrt 3 $, then its solubility product will be

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