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Question

Chemistry Question on Catalysis

Given below are two statements.
Statement I: Iron (III) catalyst, acidified K2Cr2O7K_2Cr_2O_7 and neutral KMnO4KMnO_4 have the ability to oxidise II^– to I2I_2 independently.
Statement II: Manganate ion is paramagnetic in nature and involves pπpπpπ – pπ bonding.
In the light of the above statements, choose the correct answer from the options given below.

A

Both Statement I and Statement II are true

B

Both Statement I and Statement II are false

C

Statement I is true but Statement II is false

D

Statement I is false but Statement II is true

Answer

Both Statement I and Statement II are false

Explanation

Solution

Manganate ion MnO42MnO_4^{2-}has tetrahedral structure has only dπpπdπ – pπ πbondsπ-bonds.
Fe3+Fe^{3+} is not used as a catalyst in the conversion of II^– to I2I_2 by K2Cr2O7K_2Cr_2O_7.
K2Cr2O7K_2Cr_2O_7 oxidise II^– in acidic medium easily.

The correct answer is (B): Both Statement I and Statement II are false