6-2.Equilibrium-II (Ionic Equilibrium)
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$298\,K$ પર $BaSO _4$ નો દ્વાવ્યતા ગુણાકાર $1 \times 10^{-10}$ છે. $0 .1\, M\, K _2 SO _4( aq )$ દ્વાવણ માં $BaSO _4$ ની દ્રાવ્યતા $.......\times 10^{-9}\, g\, L ^{-1}$ છે. (નજીકનો પૂર્ણાક) આપેલ : $BaSO _4$ નું મોલર દળ $233\, g\, mol\, m ^{-1}$ છે.

A

$233$

B

$232$

C

$231$

D

$234$

(JEE MAIN-2023)

Solution

$K _2 SO _4 \longrightarrow 2 K ^{+}+ SO _4{ }^{2-}$

$0.1 M \quad\quad 0.2 M \quad0.1 M$

$BaSO _4 \rightleftharpoons Ba ^{+2}+ SO _4{ }^{2-}$

$a – S \quad S \quad S +0.1 \approx 0.1$

$K _{ SP }= S \times 10^{-1}$

$\Rightarrow 1 \times 10^{-10}= S \times 10^{-1}$

$\Rightarrow S =10^{-9} mol L^{-1 }$

So, $S =10^{-9} \times 233\,g\,L ^{-1}$

So, Answer : $233$

Standard 11
Chemistry

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