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In acidic medium, CrO(4)^(2-) changes to...

In acidic medium, `CrO_(4)^(2-)` changes to

A

`Cr_2O_7^(2-)`

B

`Cr^(3+)`

C

`Cr(IV)`

D

`Cr_2O_3`

Text Solution

Verified by Experts

The correct Answer is:
A
In acidic condition, chromate ions are changed to dichromate ions.
`underset("Yellow")(2CrO_4^(2-)) + 2H^(+) to underset("Orange")(Cr_2O_7^(2-)) + H_2O`
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ERRORLESS-THE d-AND f- BLOCK ELEMENTS -NCERT BASED QUESTIONS (Compounds of Transitional Elements)
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  2. Which of the following is the green coloured powder produced when ammo...

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  3. In acidic medium, CrO(4)^(2-) changes to

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  4. When acidified K(2)Cr(2)O(7) solution is added to Sn^(2+) salts then S...

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  5. In the reduction of dichromate by Fe(II), the number of electrons invo...

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  8. The reddish brown gas produced by heating KCl with solid K2Cr2O7 and...

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  9. When H(2)O(2) is shaken with an acidified solution of K(2)Cr(2)O(7) in...

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  10. How is sodium chromate converted into sodium dichromate in the manufac...

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  14. In aqueous solution Cr^(2+) is stronger reducing agent than Fe^(2+). T...

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  15. The correct order of increasing oxidising power in the series is

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  17. Why Mn^(2+) compounds are more stable than Fe^(2+) compounds towards o...

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  20. MnO(4)^(-) reacts with Br^(-) in alkaline pH to give

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