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What happen when a solution of potassium...

What happen when a solution of potassium chromate is treated with an excess of dil. Nitic acid?

A

`Cr_(2)O_(7)^(2-)` and `H_(2)O` are formed

B

`Cr_(2)O_(4)^(2-)` is reduced to `0` state of `Cr`

C

`CrO_(4)^(2-)` is reduced to `+3` state of `Cr`

D

`Cr^(3+)` and `Cr_(2)O_(7)^(2-)` are formed

Text Solution

Verified by Experts

The correct Answer is:
A
`2CrO_(4)^(2-)+2H^(+)rarrCr_(2)O_(7)^(2-)+H_(2)O`
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  7. In which triplet each species can act as oxidant and reductant?

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  9. Which species are oxidised and reduced in the reaction? FeC(2)O(4)+K...

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  10. The number of moles of KMnO(4) reduced by 1 "mol of" KI in alkaline me...

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  11. 3 mole of FeSO(4) are oxidised by a mole of KMnO(4) in acidic medium w...

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  12. Which of the following is not disproportionation (or auto redox) react...

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  13. Which of the following is not intramolecular redox raction?

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  14. Which of the following is intermolecular redox change?

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  15. The oxides which cannot act as reductant: (I) CO(2) (II) SO(3) (III)...

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  16. Equivalent weight of (NH(4))(2)Cr(2)O(7) in the changes is: (NH)(4)C...

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  17. Which one is not observed in the reaction? KO(2)+H(2)O+CO(2)rarrKHCO...

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  18. The [CrO(4)^(2-)] ions are equilibrium for the reaction, Cr(2)O(7)^(...

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  19. 1 litre solution of unknown molarity is titrated by taking its 50 mL s...

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