NEET · Chemistry · STD 11 - 7. Redox reactions
\(HgCl_2\) and \(I_2\) both when dissolved in water containing \(I^-\) ions, the pair of species formed is
- A \(HgI_2 , I^-\)
- B \(HgI_4^{2-}, I^-_3\)
- C \(Hg_2I_2, I^-\)
- D \(HgI_2 , I_3^-\)
Answer & Solution
Correct Answer
(B) \(HgI_4^{2-}, I^-_3\)
Step-by-step Solution
Detailed explanation
\(\mathrm{HgCl}_{2}+2 \mathrm{I}^{-} \longrightarrow \mathrm{HgI}_{2}+2 \mathrm{Cl}^{-} \)\(\stackrel{+2I^-}{\longrightarrow}\left[\mathrm{HgI}_{4}\right]^{-2}\) Soluble complex
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