Which of the following happens when $\text{N}{{\text{H}}_{4}}\text{OH}$ is added gradually to the solution containing 1 M ${{\text{A}}^{{2+}}}$ and ions?
Given : ${{\text{K}}_{{\text{sp}}}}\left[ {\text{A}{{{(\text{OH})}}_{2}}} \right]=9\times {{10}^{{-10}}}$ and ${{\text{K}}_{{\text{sp}}}}\left[ {\text{B}{{{(\text{OH})}}_{3}}} \right]=27\times {{10}^{{-18}}}$ at 298 K.
Select the correct option:
A
$\text{A}{{(\text{OH})}_{2}}$ will precipitate before $\text{B}{{(\text{OH})}_{3}}$
B
Both $\text{A}{{(\text{OH})}_{2}}$ and $\text{B}{{(\text{OH})}_{3}}$ do not show precipitation with $\text{N}{{\text{H}}_{4}}\text{OH}$
C
$\text{A}{{(\text{OH})}_{2}}$ and $\text{B}{{(\text{OH})}_{3}}$ will precipitate together
D
$\text{B}{{(\text{OH})}_{3}}$ will precipitate before $\text{A}{{(\text{OH})}_{2}}$
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