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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
`3Fe+4H_(2)OrarrFe_(3)O_(4)+4H_(2)`
`3Fe^(0)rarr(Fe^(8//3+))_(3)+8e`
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P BAHADUR-REDOX REACTIONS-Exercise 3(A) Objective problems
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  2. Oxidation state of nitrogen is incorrectly given for:

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

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  4. The oxidation number of C in HNC is

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  5. Oxidation number of Cl in NOClO(4) is:

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  6. Oxidation number of S in [(CH(3))(2)SO] is:

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  7. The equivalent weight of salt KHC(2)O(4).H(2)C(2)O(4).4H(2)O when us...

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

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

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  10. The colour of K(2)Cr(2)O(7) changes from red-orange to lemon-yellow on...

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  11. 50 mL of 0.1M solution of a salt reacted with 25 mL of 0.1M solution o...

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  12. In a reaction, 4 mole of electrons are transferred to 1 mole of HNO(3)...

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  13. During developing of an exposed camera, film one step involves in the ...

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  14. The ratio of equivalent weights of C(2)H(5)OH in the following reactio...

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  15. An element A in a compound ABD has oxidation number A^(n-). It is oxi...

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  16. N(2) + 3 H(2) rarr 2NH(3) Molecular weight of NH(3) and N(2) are x(1...

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  17. Equivalent weight of FeC(2)O(4) during its reaction with KMnO(4) is:

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  18. The no.of electrons involved in the change, Fe(3)O(4)rarrFe(2)O(3):

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  19. How many gram of I(2) are present in a solution which requires 40 mL o...

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  20. What weight of FeSO(4) ( mol.wt. =152) will be oxidised by 200 mL of n...

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