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In acidic medium, H(2)O(2) changes Cr(2)...

In acidic medium, `H_(2)O_(2)` changes `Cr_(2)O_(7)^(-2)` to `CrO_(5)` which has two `(-O-O)` bonds. Oxidation state of `Cr` in `CrO_(5)` is

A

`+5`

B

`+3`

C

`+6`

D

`-10`

Text Solution

Verified by Experts

The correct Answer is:
C
The structure of `CrO_(5)` is

Hence `CrO_(5)` has two proxy linkage.
Now suppose the oxi. No. of Cr is x then
`x+(-1xx 4) + (-2) =0`
`therefore x = +6`
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DISHA PUBLICATION-THE D- AND F- BLOCK ELEMENTS -EXERCISE - 1 CONCEPT BUILDER (TOPIC 2 : COMPOUNDS OF TRANSITION METALS)
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  6. Among the following, the compound that is both paramagnetic and colour...

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  7. K(2)Cr(2)O(7) on heating with aqueous NaOH gives

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  8. What would happen when a solution of potassium chromate is treated wit...

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  9. The oxidation state of chromium in the final product formed by the rea...

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  10. The final products formed on the addition of KI to copper sulphate sol...

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  11. KMnO(4) (acidic / alkaline ) is not decolurised by

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  12. Acidified K(2)Cr(2)O(7) solution turns green when NasO(3) is added to ...

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  13. KMnO4 can be prepared fromK2MnO4 as per the reaction: The reaction ...

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  14. The pair of compounds that can exist together is:

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  15. In acidic medium, H(2)O(2) changes Cr(2)O(7)^(-2) to CrO(5) which has ...

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  16. The reaction of aqueous KMnO(4) with H(2)O(2) i acidic conditions give...

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  17. Which of the following processes does not involve oxidation of iron ?

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  18. Assuming complete ionization , same moles of which of the following co...

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  19. Which one of the following statements is correct when SO(2) is passed ...

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  20. Name the gas that can readily decolourise acidified KMnO(4) solution:

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