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Question
Write the solubility product of sparingly soluble salt Bi2S3.
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Solution
\[\ce{Bi2S3_{(s)} ⇌ 2Bi^{3+}_{ (aq)} + 3S^{2-}_{ (aq)}}\]
∴ K(sp) = `["Bi"^(3+)]^2 ["S"^(2-)]^3`
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