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The number of electrons involved in the ...

The number of electrons involved in the reduction of nitrate `(NO_(3)^(ө))` to hydrazine `(N_(2)H_(4))` is

A

`8`

B

`7`

C

`5`

D

`3`

Text Solution

Verified by Experts

The correct Answer is:
B
`{:(,NO_(3)^(-1),rarr,NH_(2).NH_(2),),(2N^(5+)+,14e,rarr,2N^(2-),),(N^(+),+7e,rarr,1//2[N_(2)H_(4)],):}`
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P BAHADUR-REDOX REACTIONS-Exercise 3(A) Objective problems
  1. The oxidation number of C in NaOCN and NaCNS are repspectively:

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  2. Maximum oxdation number of under lined atom is shown in:

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  3. The number of electrons involved in the reduction of nitrate (NO(3)^(ө...

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  4. Which of the following ion is spectator ion in the reaction given belo...

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  5. Which reaction does not represent auto redox or disproptionation?

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  6. The average oxidation number of I in KI(3), Fe in Fe(3)O(4) are respec...

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  7. The correct name for NO(2) using stock notation is :

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  8. The values of X, Y and Zs in the reaction are repectively: XMnO(4)^(...

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  9. In which of the following metal atom has negative oxidation satate? ...

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  10. The value of x in the partial redox equation MnO(4)^(-)+8H^(+)+xe hA...

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  11. The composition of a sample of Wustite is Fe(0.93)O(1.00). What percen...

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  12. In which triplet each species can act as oxidant and reductant?

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  13. Four Cl(2) molecules undergo a loss and gain of 6 "mole" of electrons...

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

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

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  16. 3 mole of FeSO(4) are oxidised by a mole of KMnO(4) in acidic medium w...

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

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

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  19. Which of the following is intermolecular redox change?

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

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