Home
Class 12
CHEMISTRY
The oxidation number of Cr in K(2)Cr(2)O...

The oxidation number of `Cr` in `K_(2)Cr_(2)O_(7)` is

A

`-6`

B

`+6`

C

`+2`

D

`-2`

Text Solution

Verified by Experts

The correct Answer is:
B

`2+2x+7(-2)=0`
`:. x = (12)/(2)=+6`.
Promotional Banner

Topper's Solved these Questions

  • REDOX REACTIONS

    DINESH PUBLICATION|Exercise Selected Straight|32 Videos
  • REDOX REACTIONS

    DINESH PUBLICATION|Exercise Linked comprehension|7 Videos
  • REDOX REACTIONS

    DINESH PUBLICATION|Exercise MCQs|42 Videos
  • PURIFICATION & CHARACTERISATION OF ORGANIC COMPOUND

    DINESH PUBLICATION|Exercise Ultimate Preparatory Package|15 Videos
  • SOLID STATE

    DINESH PUBLICATION|Exercise Brain storming|10 Videos

Similar Questions

Explore conceptually related problems

The oxidation state of Cr in K_(2)Cr_(2)O_(7) is:

Write oxidation number of Cr in Cr_(2)O_(7)^(2–) .

Oxidation number of Cr in K_(2)Cr_(2)O_(7),CrO_(5) and Cr_(2)(SO_(4))_(3) respectively is

The coordination number and oxidation number of Cr in K_(3)[Cr(C_(2)O_(4))_(3)] are, respectively,

What is the change in oxidation state of Cr" in " K_(2)Cr_(2)O_(7) when it acts as an oxidising agent.

Which element will have the maximum oxidation number in K_(2) Cr_(2) O_(7) and KMnO_(4) -

The oxidation state of Cr in Cr_(2)O_(7)^(2-) is

DINESH PUBLICATION-REDOX REACTIONS-Revision Question
  1. In the reaction 2Ag+2H(2)SO(4)rarrAg(2)SO(4)+2H(2)O+SO(2),H(2)SO(40act...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  15. During nitration of benzene withnitrating mixture, HNO(3) acts as

    Text Solution

    |

  16. The chemical that undergoes self oxidation and self reduction in the s...

    Text Solution

    |

  17. The reaction in which hydrogen peroxide acts as a reducting agent is .

    Text Solution

    |

  18. The set of numerical coefficients that balances the chemical equation ...

    Text Solution

    |

  19. The oxidation state of sulphur in Na(2)S(4)O(6) is

    Text Solution

    |

  20. The values of X, Y and Zs in the reaction are repectively: XMnO(4)^(...

    Text Solution

    |