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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
The oxidation number of `Ni` changes from `0` to `+1`.
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A2Z-REDOX REACTIONS-Section D - Chapter End Test
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  14. When sodium metal is dissolved in liquid ammonia, blue colour solution...

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  15. Which of the following is redox reaction ?

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

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  18. Which of the following substances acts as an oxidising as well as a re...

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  19. When K(2)Cr(2)O(7) is converted to K(2)CrO(4), the change in the oxida...

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  20. Oxidation state of chlorine in perchloric acid is

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  21. The oxidation number of S in H(2)S(2)O(8) is

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