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

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

A

`+5`

B

`+3`

C

`+6`

D

`+7`

Text Solution

Verified by Experts

The correct Answer is:
C
Let the oxidation state of Cr is x
`K_(2)Cr_(2)O_(7)`
`therefore 2(+1)+2x=7(-2)=0`
`2+2x-14=0`
`2x-12=0`
`2x=12`
`x=12/2 = +6`
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise QUESTIONS|68 Videos

Similar Questions

Explore conceptually related problems

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

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

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

In acidic medium, H_(2)O_(2) changes Cr_(2)O_(7)^(2-) ion to CrO_(5) . The oxidation states of Cr in Cr_(2)O_(7)^(2-) and CrO_(5) are respectively :

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

The oxidation states of Cr in [Cr(H_(2)O)_(6)]Cl_(3). [Cr(C_(6)H_(6))_(2)] and K_(2)[Cr(CN)_(2)(O)_(2)(O_(2))(NH_(3))] respectively are

NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-TRANSITION ELEMENTS D- AND F- BLOCK ELEMENTS-MCQ TYPES
  1. Which of the following elements is responsible for oxidation of water ...

    Text Solution

    |

  2. Which of the following does not represent the correct order of the pro...

    Text Solution

    |

  3. Which of the following may be considered to be an organometallic compo...

    Text Solution

    |

  4. Cuprous compounds such as CuCI, CuCN and CuSCN are the only salts stab...

    Text Solution

    |

  5. Stainaless steel contains iron and

    Text Solution

    |

  6. By passing H(2)S in acidified KMnO(4) solution we get

    Text Solution

    |

  7. Among the lanthanides the one obtained by synthetic method is

    Text Solution

    |

  8. Actinides

    Text Solution

    |

  9. When (NH(4))(2)Cr(2)O(7) is heated, the gas evolved is

    Text Solution

    |

  10. The common oxidation states of Ti are

    Text Solution

    |

  11. The most durable metal plating on iron to protect it againt corrosion ...

    Text Solution

    |

  12. When CuSO(4) is electrolysed, using Pt electrodes

    Text Solution

    |

  13. The transition elements have a general electronic configuration:

    Text Solution

    |

  14. Cinnabar is an ore of

    Text Solution

    |

  15. While extracting an element from its ore, the ore is grind and leached...

    Text Solution

    |

  16. Nitriding is a process of hardening steel by treating it inan atmosphe...

    Text Solution

    |

  17. Photographic plates and films have an essential ingredient of

    Text Solution

    |

  18. The oxidation state of Cr in K(2)Cr(2)O(7) is:

    Text Solution

    |

  19. Which one of the following is an ore of silver?

    Text Solution

    |

  20. The metal which corrodes readily in moist air, is

    Text Solution

    |