Given below are two statements: Statement I : Iron (III) catalyst, acidified K 2 Cr 2 O 7 and neutral KMnO 4 have the ability to oxidise I - to I 2 independently. Statement II: Manganate ion is parama

Question

Given below are two statements:

Statement I : Iron (III) catalyst, acidified $K_{2} {Cr}_{2} O_{7}$ and neutral ${KMnO}_{4}$ have the ability to oxidise $I^{-}$ to $I_{2}$ independently.

Statement II: Manganate ion is paramagnetic in nature and involves $pπ - pπ$ bonding.

In the light of the above statements, choose the correct answer from the options.

TestHub · Accepted Answer

Iodine is liberated from potassium iodide.
$10 I^{-} + 2 {MnO}_{4}^{-} + 16 H^{+} \overset{}{\to} 2 {Mn}^{2 +} + 8 H_{2} O + 5 I_{2}$
$\underset{Potassium dichromate}{K_{2} {Cr}_{2} O_{7}} + 7 H_{2} {SO}_{4} + 6 KI \to {Cr}_{2} {({SO}_{4})}_{3} + 3 I_{2} + 4 K_{2} {SO}_{4} + 7 H_{2} O$
$2 {Fe}^{3 +} + 2 KI \to 2 {Fe}^{2 +} + I_{2} + 2 K^{+}$

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Options:

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