Solubility of $AgCl$ in $0.2\,M\, NaCl$ is $x$ and that in $0.1\, M\, AgNO_3$ is $y$ then which of the following is correct ?

The solubility product of $BaSO _4$ is $1 \times 10^{-10}$ at $298\,K$. The solubility of $BaSO _4$ in $0.1\,M\,K _2 SO _4( aq )$ solution is $………\times 10^{-9}\,g\,L ^{-1}$ (nearest integer). Given : Molar mass of $BaSO _4$ is $233\,g\,mol ^{-1}$

For the reaction in aqueous solution $Z{n^{2 + }} + {X^ – } \rightleftharpoons Zn{X^ + },$ the ${K_{eq}}$ is greatest when $X$ is

Which one of the following arrangements represents the correct order of solubilities of sparingly soluble salts $Hg_2Cl_2,\,\,Cr_2(SO_4 )_3,\,\,BaSO_4$ and $CrCl_3$ respectively ?

$PbCl_2$ is dissolved in water to make its saturated solution. What will be the freezing point of this solution.

Given : $K_f (H_2O)$ = $2\ K\ kg\ mole^{-1}$, $K_{sp} (PbCl_2)$ = $4 × 10^{-6}$

(Assume molarity to be equal to molality) …..$^oC$