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In which one of the following changes th...

In which one of the following changes there are transfer of five electrons?

A

`MnO_(4)^(-) to Mn^(2+)`

B

`CrO_(4)^(2-) to Cr^(3+)`

C

`MnO_(4)^(2-) to MnO_(2)`

D

`Cr_(2)O_(7)^(2-) to 2Cr^(3+)`

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The correct Answer is:
A
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MARVEL PUBLICATION-REDOX REACTIONS -TEST YOUR GRASP
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  2. When KMnO(4) reacts with acidified FeSO(4)

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  3. Of the following reactions, only one is a redox reaction.Identify it.

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  4. In which of the following pairs, there is greatest difference in the o...

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  5. A,B and C are three elements forming part of a compound in oxidation s...

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  6. When SO(2) is passed through the solution of potassium iodate,the oxid...

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  7. In the reaction between SO(2) and SO(3) the equivalent weight of ozone...

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  8. The atomic number of an element is 22. The highest oxidation state exh...

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  9. The equivalent weight of potassium permanganate in acid solution is

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  10. In the reaction which element undergoes oxidation as well as reduction...

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  11. In the chemical reaction, K(2)Cr(2)O(7)+xH(2)SO(4)+ySO(2)rarrK(2)SO(...

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  12. Consider the following reaction, 5H(2)O(2)+x ClO(2)+2OH^(-) to Cl^(-...

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  13. xMnO4^(-) +yH2O2 rarr 2Mn^(2+) + 5 H2O + 9O2 + Ze^(-) In this reaction...

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  14. The oxidation states of sulphur in the anions SO(3)^(2-), S(2)O(4)^(2-...

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  15. 20 ml 0.18 M KOH is required to react with FeCl(2) to convert it into ...

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  16. Of the following elements, which one has the same oxidation state in a...

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  17. The oxidation number of carbon in CH2O is.

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  18. The oxidation number of phosphorus in Ba(H(2)PO(2))(2) is:-

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  19. When KMnO(4) is reduced with oxalic acid in acidic solution, the oxida...

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  20. If three electrons are lost by a metal ion M^(3+), its final oxidation...

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  21. Phosphorus has the oxidation state +3 in

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