COMEDK · Chemistry · 19. Chemical Kinetics
Identify the catalyst used in the reaction between Iodide and persulphate ions.
\(2 \mathrm{I}^{-}+\mathrm{S}_2 \mathrm{O}_8{ }^{2-} \rightarrow \mathrm{I}_2+2 \mathrm{SO}_4{ }^{2-}\)
- A \(\mathrm{Fe}^{3+}\)
- B \(\mathrm{Cr}^{3+}\)
- C \(\mathrm{Fe}^{2+}\)
- D \(\mathrm{Ni}^{2+}\)
Answer & Solution
Correct Answer
(A) \(\mathrm{Fe}^{3+}\)
Step-by-step Solution
Detailed explanation
The reaction between iodide ions and persulphate ions is represented by the equation \(2 \mathrm{I}^{-} + \mathrm{S}_{2}\mathrm{O}_{8}^{2-} \rightarrow \mathrm{I}_{2} + 2\mathrm{SO}_{4}^{2-}\). This reaction is known to be catalyzed by iron(III) ions, \(\mathrm{Fe}^{3+}\). The…
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