$A$ white powder soluble in $NH_4OH$ but insoluble in water is:

The salt having the least solubility in water is

Write the formula for the solubility of a salt of type $AB_2$.

The solubility product of silver bromide $(AgBr)$ is $5.0 \times 10^{-13}$. What is the minimum amount of potassium bromide $(KBr)$ that must be added to $1 \ L$ of $0.05 \ M$ silver nitrate $(AgNO_3)$ solution to initiate the precipitation of $AgBr$? (Molar mass of $KBr = 120 \ g \ mol^{-1}$)

Which of the following formulas can be used to calculate the solubility of $Ag_2CO_3$?

The solubility product of $Ni(OH)_2$ at $298 \ K$ is $2 \times 10^{-15} \ mol^3 \ dm^{-9}$. The $pH$ value of its aqueous and saturated solution is