Solubility of calcrum phosphate (molecular mass, M) in water is $\mathrm{W}_{\mathrm{g}}$ per $100 \mathrm{~mL}$ at $25^{\circ} \mathrm{C}$. Its solubility product at $25^{\circ} \mathrm{C}$ will beapproximately.

At $298\,K$, the solubility of silver chloride in water is $1.434 \times 10^{-3}\,g\,L ^{-1}$. The value of $-\log K _{ sp }$ for silver chloride is $……..$ (Given mass of $Ag$ is $107.9\,g\,mol ^{-1}$ and mass of $Cl$ is $35.5\,g\,mol ^{-1}$ )

The solubility product of $A{s_2}{S_3}$ is $2.8 \times {10^{ – 72}}$. What is the solubility of $A{s_2}{S_3}$

Solubility product of a salt $AB $ is $1 \times {10^{ – 8}}$ in a solution in which concentration of $A$ is ${10^{ – 3}}\,M$. The salt will precipitate when the concentration of $B$  becomes more than

$K_{sp}$ for $BaSO_4$ at $25\,^oC$ is $1.1 \times 10^{-10}$. To make the new solubility equal to $1.1 \times 10^{-8}$, it is necessary to use the solution of $Na_2SO_4$ of the following concentration….$M$