Question
Write the solubility product of sparingly soluble salt $Bi_2S_3$.
✓
Answer
$\begin{aligned} Bi _2 S _{3( s )} \rightleftharpoons 2 Bi _{(\text {aq })}^{3+}+3 S _{\text {(aq) }}^{2-} \\ \therefore K _{\text {(sp) }}=\left[ Bi ^{3+}\right]^2\left[ S ^{2-}\right]^3 & \end{aligned}$
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