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6-2.Equilibrium-II (Ionic Equilibrium)
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$AB$ સંયોજન, $80\% $ આયોનાઈઝ થાય છે. $AB$ ની દ્રાવ્યતા કેટલી થશે ? જો તેની દ્રાવ્યતા ગુણાકાર $6.4 \times 10^{-9} $ છે.

A

$0.8 \times10^{-4}$

B

$8 \times 10^{-5}$

C

$10^{-5}$

D

$10^{-4}$

Solution

$AB$ $ \rightleftharpoons $ $A^+$      $B^-$

$s $       $0.8s$     $0.8$

$[A^+]$   $[B^-]$ = $K_{sp}$

$(0.8s)$   $(0.8s)$ = $6.4 \times 10^{-9}$

$0.64 s^2 = 6.4 \times 10^{-9}$

${s^2} = \frac{{6.4 \times {{10}^{ – 9}}}}{{0.64}} = {10^{ – 8}}\,\,\,\,\therefore \,\,s = {10^{ – 4}}$

Standard 11
Chemistry

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