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Given below are two statements.
Statement I: Iron (III) catalyst, acidified \mathrm{K}_{2} \mathrm{Cr}_{2} \mathrm{O}_{7} and neutral \mathrm{KMnO}_{4} have the ability to oxidise \mathrm{I}^{-}$ to $\mathrm{I}_{2}  independently.
Statement II: Manganate ion is paramagnetic in nature and involves \mathrm{p \pi-p \pi} bonding.
In the light of the above statements, choose the correct answer from the options given below.
 

Option: 1

Both Statement I and Statement II are true.
 


Option: 2

Both Statement I and Statement II are false.
 


Option: 3

Statement I is true but Statement II is false.
 


Option: 4

Statement I is false but Statement II is true.


Answers (1)

best_answer

Iron (III) catalyst cannot oxidise \mathrm{I^{-}to\, I_{2}} independently.
Iron (III) catalyses the the reaction between iodide and persulphate ions.

\mathrm{2 \mathrm{I}^{-}+\mathrm{S}_2 \mathrm{O}_8^{2-} \rightarrow \mathrm{I}_2+2 \mathrm{SO}_4^{2-}}

Statement (1) is false
Manganate ion is paramagnetic in nature and involves \mathrm{p\pi -d\pi } bonding not \mathrm{p\pi -p\pi } bonding.
Statement II is false

Option (2) is correct.

Posted by

HARSH KANKARIA

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