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Which substance is serving as a reducing...

Which substance is serving as a reducing agent in the following reaction?
`14H^(+)+Cr_(2)O_(7)^(2-)+3Ni rarr 2Cr^(3+)+7H_(2)O+3Ni^(2+)`

A

`H_(2)O`

B

Ni

C

`H^(+)`

D

`Cr_(2)O_(7)^(2-)`

Text Solution

Verified by Experts

The correct Answer is:
B
Metals act as good reducing agent (see review for details)
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DINESH PUBLICATION-REDOX REACTIONS-Revision Question
  1. Oxidation number of O in H(2)O(2) will be

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  2. Which of the following halogen acid is better reducing agent ?

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  3. Which substance is serving as a reducing agent in the following reacti...

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  4. For the redox reation MnO(4)^(-)+C(2)O(4)^(2-)+H^(+)rarrMn^(2+)CO(2)...

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  5. In which of the following reactions H(2)O(2) is a reducing agent?

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  6. The oxidation number of P in Mg(2)P(2)O(7) is

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  7. In the reaction 2Ag+2H(2)SO(4)rarrAg(2)SO(4)+2H(2)O+SO(2),H(2)SO(40act...

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  8. Oxidation state of S in SO(4)^(2-)

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  9. The oxidation number of Cr in K(2)Cr(2)O(7) is

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  10. A 2.5 mol of hydrazine N(2)H(4) loses 25 mole of electrons is being co...

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  11. In the chemical reaction, Ag(2)O+H(2)O+2e^(-) to 2Ag+2OH^(-)

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  12. The oxidation state of Fe in Fe(CO)(5) is

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  13. Oxidation state of oxygen in H(2)O(2) is

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  14. The reaction 5H(2)O(2)+XClO(2)+2OH^(-) rarr XCl^(-)+YO(2)+6H(2)O i...

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  15. Which of the following is not a reducing agent ?

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  16. The equivalent mass of oxidising agent in the following reaction is ...

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  17. A,B and C are three elements forming a compound in which their oxidati...

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

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  19. Oxidation state of in Fe(3)O(4) is

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  20. The number of moles of K(2)Cr(2)O(7) reduced by 1 mol of Sn^(2+) ions ...

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