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When K(2)Cr (2) O (7) is converted into ...

When `K_(2)Cr _(2) O _(7)` is converted into `K_(2) Cr O_(4),` the change in oxidation number of chromium is

A

0

B

5

C

7

D

9

Text Solution

Verified by Experts

The correct Answer is:
A
`(+6) - (+6) = 0`
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CENGAGE CHEMISTRY-CHEMICAL ARITHMETIC -MANDATORY EXERCISE (EXERCISE SET II)
  1. In which of the following compounds, Cr has minimum oxidation number

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  2. The oxidation state of which element is constant in all its compounds ...

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  3. The oxidation number and valency of S in S(8) is

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  4. Nirogen has fractional oxidation number in

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  5. Oxidation number of sodium in sodium amalgam is

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  6. A compound contains atoms of three elements A, B, and C with following...

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  7. What is the oxidation number of tungsten in the ion W(6) O (6) C(12) ^...

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  8. Which quantities are conserved in all oxidation Reduction reaction ?

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  9. Oxidation state of sulphur in Na (2) S(4) O (6) is

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  10. Oxidation number of S in caro's acid is

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  11. The oxidation state of Cr in Chromium trioxide is

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  12. The oxidation states of Iodine in HIO (5) and H (5) IO (6) are respect...

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  13. Oxidation states of x,y,z are + 2,+5,and -2 respectively. Formula of ...

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  14. In which of the following compounds, the oxidation number of Iodine is...

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  15. When K(2)Cr (2) O (7) is converted into K(2) Cr O(4), the change in ox...

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  16. The oxidation state of I in IPO(4) is

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  17. Which of the oxidation state is not possible for oxygen ?

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  18. What is the oxidation state of P in Ba (H(2) PO(2)) (2)

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  19. Arrange the following in increasing order oxidation number of Mn

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  20. In which of the following oxygen shows -1 oxidation state ?

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