Solubility and Equilibria of Sparingly Soluble Salts

Solubility products of $\mathrm{CuI}$ and ${\mathrm{Ag}}_2{\mathrm{CrO}}_4$ have almost the same value $\left(~4\times {10}^{-12}\right)$. The ratio of solubilities of the two salts $\left(\mathrm{CuI}:{\mathrm{Ag}}_2{\mathrm{CrO}}_4\right)$ is closest to 

The solubility of $\text{B}\text{a}\text{S}{\text{O}}_4$ in pure water (in $\text{g}{\text{L}}^{-1}$ ) is closest to
$\left[\right.$Given; ${\text{K}}_{\text{sp}}$ for $\text{B}\text{a}\text{S}{\text{O}}_4$ is $1.0\times {10}^{-10}$ at $25°\text{C}.$ Molecular weight of $\text{B}\text{a}\text{S}{\text{O}}_4$ is $233 \text{g} \text{m}\text{o}{\text{l}}^{-1}$ ]

By which of the following processes can the common salt be purified?

Which acid is used in the purification of common salt?

What is the minimum mass of $\mathrm{NaBr}$ which should be added in $200 \mathrm{ml}$ of $0.0004\mathrm{M} {\mathrm{AgNO}}_3$ solution just to start the precipitation of $\mathrm{AgBr}$ ? The value of ${\mathrm{K}}_{\mathrm{sp}}$ of $\mathrm{AgBr}=4\times {10}^{-13}$ $\left(\mathrm{Br}=80\right)$

Salting out action of soap is based on:

Why is salting out necessary in soap production?

Using Gibb’s free energy change,$∆{\mathrm{G}}^0 = 57.34 \mathrm{kJ} {\mathrm{mol}}^{-1}$, for the reaction ${\mathrm{X}}_2\mathrm{Y}\left(\mathrm{s}\right)\to 2{\mathrm{X}}^{+}\left(\mathrm{aq}\right) + {\mathrm{Y}}^{2-}\left(\mathrm{aq}\right)$. Calculate the solubility product of ${\mathrm{X}}_2\mathrm{Y}$ in water at $300\mathrm{K} \left(\mathrm{R}= 8.3 {\mathrm{JK}}^{-1 }{\mathrm{mol}}^{-1}\right)$.

Find the solubility product in ${\mathrm{mol}}^5 {\mathrm{L}}^{-5}$ of ${\mathrm{Ca}}_3({\mathrm{PO}}_4{)}_2$, whose solubility in water is $\mathrm{X} \mathrm{mol} {\mathrm{L}}^{-1}$?

Calculate the maximum amount (in g) of ${\mathrm{MgCO}}_3$ salt that can be dissolved in 1L water without giving any precipitate if ${\mathrm{K}}_{\mathrm{sp}}$ of ${\mathrm{MgCO}}_3$ is $3.5\times {10}^{–8}$ . $(\sqrt{3.5}=1.87)$

Given the pH of saturated solution of Mg(OH)₂ is 8.699. K_sp of Mg(OH)₂ at this temperature is

Which of the following represent the correct order of solubility of the salts  MX, MX₂, M₃X at temperature T ,If their solubility product constants $\left({\mathrm{K}}_{\mathrm{s}\mathrm{p}}\right)$ of salts of types $\mathrm{M}\mathrm{X},\mathrm{ }{\mathrm{M}\mathrm{X}}_2,\mathrm{ }{\mathrm{M}}_3\mathrm{X}$ at temperature $\mathrm{T}$ are $4\mathrm{ }\times \mathrm{ }{10}^{–8},\mathrm{ }3.2\mathrm{ }\times \mathrm{ }{10}^{–14}$ and $2.7\mathrm{ }\times \mathrm{ }{10}^{–15}$ respectively.

With a buffer solution of pH = 8, An equimolar solid mixture of ${\mathrm{AlCl}}_3,{\mathrm{FeCl}}_3$ and ${\mathrm{CrCl}}_3$ is washed. After precipitates are removed, the maximum possible ratio of any two trivalent ion concentrations in the solution is $\mathrm{x}\times {10}^{\mathrm{y}}.$ Determine $\left(\mathrm{y}-\mathrm{x}\right) :$

${\mathrm{K}}_{\mathrm{sp}}\mathrm{values}:\mathrm{Al}{\left(\mathrm{OH}\right)}_3=2\times {10}^{-34}; \mathrm{Fe}{\left(\mathrm{OH}\right)}_3=4\times {10}^{-39}; \mathrm{Cr}{\left(\mathrm{OH}\right)}_3=2\times {10}^{-31}.$

For the following reaction at the equilibrium:
${\mathrm{AgCl}}_{\left(\mathrm{s}\right)}\rightleftharpoons {{\mathrm{Ag}}^{+}}_{\left(\mathrm{aq}\right)}+{{\mathrm{Cl}}^{-}}_{\left(\mathrm{aq}\right)} ; {\mathrm{K}}_{\mathrm{sp}}={10}^{-10}$

If ${\mathrm{NH}}_3$ is added, then solubility of $\mathrm{AgCl}$ increases, because

What is the reason behind this phenomenon- $\mathrm{NaCl}$ precipitates out when $\mathrm{HCl}$ gas is passed through a solution of an impure sample of $\mathrm{NaCl}$?

 What will be the value of K_sp of Mg(OH)₂ whose saturated solution of Mg(OH)₂ has a pH of 8.699 ?

Calculate the solubility product of ${\mathrm{BaSO}}_4$, if the conductivity of the saturated solution of ${\mathrm{BaSO}}_4$ is $3\times {10}^{-6} {\mathrm{ohm}}^{-1} {\mathrm{cm}}^{-1}$ and, its molar conductance is $1.5 {\mathrm{ohm}}^{-1} {\mathrm{cm}}^2 {\mathrm{mol}}^{-1}$.

$\mathrm{M}[\mathrm{OH}{]}_x$ is a sparingly soluble salt. It has ${\mathrm{K}}_{\mathrm{sp}}=4\times {10}^{-12}$ and solubility $={10}^{-4}\mathrm{M}$ at $298\mathrm{K}$ What is the value of x ?

The minimum volume of water required to dissolve $2.78 \mathrm{g}$ lead $\left(\mathrm{II}\right)$ chloride to get a saturated solution$({\mathrm{K}}_{\mathrm{sp}}\hspace{0.17em}\mathrm{of}\hspace{0.17em}{\mathrm{PbCl}}_{\mathrm{2}}=3.2\times {10}^{-8}$

molar mass of ${\mathrm{PbCl}}_2=278 \mathrm{g} {\mathrm{mol}}^{-1}$ ) is______ L.