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The oxidation state of chrominium in the...

The oxidation state of chrominium in the final product formed in the reaction between `KI` and acidified potassium dichromate soluttion is

A

`+4`

B

`+6`

C

`+2`

D

`+3`

Text Solution

Verified by Experts

The correct Answer is:
D
`6e^(-)+Cr_(2)O_(7)^(2-)rarr2Cr^(3+)`
`2I^(ө)rarrI_(2)+2e^(-)`
Oxidation state of `Cr= +3`
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CENGAGE CHEMISTRY-REDOX REACTIONS-Exercises (Single Correct)
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  2. Cr(2)O(7)^(2-)+Xoverset(H^(o+))rarrCr^(3+)+H(2)O+ "oxidised product" o...

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  3. The oxidation state of chrominium in the final product formed in the r...

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

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  5. In the balanced chemical reaction IO(3)^(ө)+aI^(ө)+bH^(ө)rarrcH(2)O+...

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  6. For the reaction M^(x+)+MnO(4)^(ө)rarrMO(3)^(ө)+Mn^(2+)+(1//2)O(2) ...

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  7. aK(2)Cr(2)O(7)+bKCl+cH(2)SO(4)rarrxCrO(2)Cl(2)+yKHSO(4)+zH(2)O The a...

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  8. The oxidation number of carbon in CH(2)Cl(2) is

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  9. Excess of KI reacts with CuSO(4) solution and Na(2)SO(3) solution is a...

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  10. The oxidation number of S in H(2)SO(5) is

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  11. The number of peroxide bonds in perxenate ion [XeO(6)]^(4-) is

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  12. The oxidation number of Pr in Pr(6)O(11) is

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  13. In which of the following is the highest oxidation state not possible?

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  14. which of the following statements is not correct about the reaction gi...

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  15. Which of the following is not a disproportionation reaction ?

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  16. Which of the following is not an intramolecular redox reaction?

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  17. In the equation N(2)^(ө)+H(2)OrarrNO(3)^(ө)+2H^(o+)+ne^(-) n stand...

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  18. Which of the following is an intermolecular redox reaction?

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  19. The oxidation state of A, B, and C in a compound are +2, +5, and -2, r...

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  20. The number of electrons lost in the following change is Fe+H(2)Orarr...

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