- ✓$5.1 \times 10 ^{-5}\, M$
- B$8.1 \times 10 ^{-8}\, M$
- C$8.1 \times 10 ^{-7}\, M$
- D$4.1 \times 10 ^{-5}\, M$
$ {1 \times 10^{-4} M} \quad {1 \times 10^{-4} M} \quad {1 \times 10^{-4} M} $
$K_{S P\left(B a C O_{3}\right)}=\left[B a^{2+}\right]\left[C O_{3}^{2-}\right]$
$\left[B a^{2+}\right]=\frac{5.1 \times 10^{-9}}{1 \times 10^{-4}}$
$=5.1 \times 10^{-5} M$
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True statement about sequence on the basis of assumption that $R$ contains $3$ different groups is
$\mathop R\limits^{\delta \oplus } \,\mathop {Br}\limits^{\delta \,\Theta } \, \rightleftharpoons $ $\mathop {\boxed{{R^ \oplus }B{r^\Theta }}}\limits_{(a)} \,\,\, \rightleftharpoons \,$$\,\mathop {\boxed{{R^ \oplus }}\,\boxed{B{r^\Theta }}\,}\limits_{(b)} \,\, \rightleftharpoons $ ${\boxed{{R^ \oplus }}}$ $ \rightleftharpoons $ $\mathop {\,\boxed{B{r^\Theta }}\,}\limits_{(c)} \,$
