Which of the following oxidation reactions are carried out by both K 2 Cr 2 O 7 and KMnO 4 in acidic medium? A. Γ − → I 2 B. S 2 − → S C. Fe 2 + → Fe 3 + D. Γ − → IO 3 − E. S 2 O 3 2 −

Question

Which of the following oxidation reactions are carried out by both $K_{2} Cr_{2} O_{7}$ and $KMnO_{4}$ in acidic medium? A. $Γ^{-} \to I_{2}$ B. $S^{2 -} \to S$ C. $Fe^{2 +} \to Fe^{3 +}$ D. $Γ^{-} \to IO_{3}^{-}$ E. $S_{2} O_{3}^{2 -} \to SO_{4}^{2 -}$ Choose the correct answer from the options given below:

Options:

Answer:

D

Solution:

$I^{-} OH IO_{3}^{-}$ $S^{- 2} H^{+} S$ $S_{2} O_{3}^{2 -} OH SO_{4}^{2 -}$ $Fe^{+ 2} ⟶ Fe^{+ 3} S_{2} O_{3}^{2 -} H^{+} S ↓ + SO_{4}^{2 -}$

TestHub · Accepted Answer

I − OH ​ IO 3 − ​ S − 2 H + ​ S S 2 ​ O 3 2 − ​ OH ​ SO 4 2 − ​ ​ Fe + 2 ⟶ Fe + 3 S 2 ​ O 3 2 − ​ H + ​ S ↓ + SO 4 2 − ​ ​

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Options:

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