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The number of electrons lost in the foll...

The number of electrons lost in the following change is
`Fe+H_(2)OrarrFe_(3)O_(4)+H_(2)`

A

2

B

4

C

6

D

8

Text Solution

Verified by Experts

The correct Answer is:
D
`Fe_(3)O_(4)-=FeO+Fe_(2)O_(3)`
Therefore, the change can be represented as
`FerarrFe^(2+)+2e^(-)`
`2Fe rarr2Fe^(3+)+6e^(-)`
`:.` Number of electrons transferred = 8.
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DINESH PUBLICATION-REDOX REACTIONS-MCQs
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  2. In the conversion of K(2)Cr(2)O(7) to K(2)CrO(4), the oxidation number...

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  3. The oxidation number of carbon in C(12) H(22) O(11) is

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  4. The oxidation number of C in HCN and HNC respectively are

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  5. Oxidation number of carbon in carbon sub-oxide is:

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  6. Oxidation number of silver in silver amalgam is

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  7. The oxidation number of N and Cl in NOClO(4) respectively are

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  8. On the basis of structure, the oxidation of two Cl atoms in CaOCl(2) r...

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  9. In which of the following reactions, the underlined substance has been...

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  10. In which of the following reactions, the underlined substance has been...

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  11. Which of the following represents a redox reaction?

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  12. In the reaction 3Cl(2)+6NaOHrarrNaClO(3)+5NaCl+3H(2)O the element ...

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

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  15. NH(3)+OCl^(-)toN(2)H(2)+Cl^(-) On balancing the above equation in ba...

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  16. Cr(OH)(3)+ClO^(-)+3OH^(-)rarr?+Cl^(-)+3H(2)O. The missing ion is

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

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  18. Balance the following redox equaiton by both methods. [Cr(OH)(4)]^(ө...

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  19. The following redox reaction occurs in basic medium NO(3)^(-)Zn(s)toZn...

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  20. The ratio of coefficient of HNO(3), Fe(NO(3))(2) and NH(4)NO(3) in the...

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