AP EAMCET · Chemistry · p Block Elements (Group 15, 16, 17 & 18)
Which among \(\mathrm{KI}, \mathrm{FeSO}_4, \mathrm{~K}_2 \mathrm{MnO}_4, \mathrm{KMnO}_4\) can't be oxidised by \(\mathrm{O}_3\) ?
- A \(\mathrm{Kl}\)
- B \(\mathrm{FeSO}_4\)
- C \(\mathrm{K}_2 \mathrm{MnO}_4\)
- D \(\mathrm{KMnO}_4\)
Answer & Solution
Correct Answer
(D) \(\mathrm{KMnO}_4\)
Step-by-step Solution
Detailed explanation
\(\mathrm{KMnO}_4\) is not oxidised by \(\mathrm{O}_3\) because \(\mathrm{KMnO}_4\) produces \(\mathrm{MnO}_4^{-}\)ion, the \(\mathrm{Mn}\) in this \(\mathrm{MnO}_4^{-}\)ion is in +VII oxidation state which is maximum for Mn. So, it cannot be further oxidised. Hence, the correct…
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