Question:
A metal nitrate reacts with KI to give a black precipitate which on addition of excess of KI convert into orange colour solution. The cation of metal nitrate is
A metal nitrate reacts with KI to give a black precipitate which on addition of excess of KI convert into orange colour solution. The cation of metal nitrate is
Updated On: Jun 14, 2022
- $Hg^{2+}$
- $Bi^{3+}$
- $Sn^{2+}$
- $Pb^{2+}$
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The Correct Option is B
Solution and Explanation
$Bi^{3+} + 3I^- \longrightarrow \underset{Black}{BiI_3 \downarrow} \xrightarrow[excess] {I^-} \underset{Orange \\solution}{[BiI_4]^-}$
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