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6-2.Equilibrium-II (Ionic Equilibrium)
medium
$AgCl$ ની દ્રાવ્યતા $4 \times 10^{-6}s $ તો તેમનો $K_{sp}$ શોધો. $2 \times 10^{-3}\, M \,CaCl_2$ ની હાજરીમાં નવી દ્રાવ્યતા શોધો.
A
$4 \times 10^{-6}$
B
$4 \times 10^{-12}$
C
$4 \times 10^{-16}$
D
$4 \times 10^{-9}$
Solution
$AgCl ⇌ Ag^+ + Cl^-$
$1$ $s$ $s$
$CaCl_2 ⇌ Ca^{+2}+ 2Cl^-$
$C $ $0$ $0$
$0$ $C$ $2C$
$AgCl ⇌ Ag^+ + Cl^-$
$1$ $ s' $ $s' + 2C$
$s^2 $= અવગણતા $K_{sp} = s'\, 2C$
$K_{sp} = s_2 = (4 ´\times 10^{-6}) = 16 \times 10^{-12}$ $ K_{sp} = s'2\,C$
$s' = \frac{{16 \times {{10}^{ – 12}}}}{{2 \times 2 \times {{10}^{ – 3}}}}\,\,\,\,\,\,\,\,s' = 4 \times {10^{ – 9}}$
Standard 11
Chemistry
