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6.2. Equilibrium - II (icon Equilibrium) — Chemistry STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceChemistry6.2. Equilibrium - II (icon Equilibrium)1 Mark
MCQ
The solubility product of $AgCl$ is $1.8 \times 10^{-10}$.Precipitation of $AgCl$ will  occur by mixing which of the following solutions when mixed in equal volume ?
  • A
    $10^{-8} \,M \, Ag^+$ and $10^{-8} \,M \,Cl^-\, ions$
  • ✓
    $10^{-3} \,M \, Ag^+$ and $10^{-3} \,M \,Cl^-\, ions$
  • C
    $10^{-6} \,M \, Ag^+$ and $10^{-6} \,M \,Cl^-\, ions$
  • D
    $10^{-10} \,M \, Ag^+$ and $10^{-10} \,M \,Cl^-\, ions$
✓

Answer

Correct option: B.
$10^{-3} \,M \, Ag^+$ and $10^{-3} \,M \,Cl^-\, ions$
b
$ \text { I.P. } =\left[\mathrm{Ag}^{+}\right]\left[\mathrm{I}^{-}\right] $

$=\frac{10^{-3}}{2} \times \frac{10^{-3}}{2} $

$=0.25 \times 10^{-6} $

$=2.5 \times 10^{-7} $

$ \mathrm{IP} >\mathrm{K}_{\mathrm{SP}} \text { precipitation occur } $

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