Home
Class 12
CHEMISTRY
In acidic medium, H(2)O(2) changes Cr(2)...

In acidic medium, `H_(2)O_(2)` changes `Cr_(2)O_(7)^(2-)` to `CrO_(5)` which has two (-O-O-) bonds. Oxidation state of Cr in `CrO_(5)` is

A

`+5`

B

`+3`

C

`+6`

D

`-10`

Text Solution

Verified by Experts

The correct Answer is:
C
`CrO_(5)` has butterfly structure having two peroxo bonds.

Oxidation state of peroxo oxygen `= -1`
`:. `If oxidation state of Cr is x, then
`x+ 4 ( -1) + 1( - 2) = 0` or `x= + 6`
Promotional Banner

Topper's Solved these Questions

  • D- AND F-BLOCK ELEMENTS

    PRADEEP|Exercise COMPREHENSION 1|6 Videos

  • D- AND F-BLOCK ELEMENTS

    PRADEEP|Exercise COMPREHENSION 2|6 Videos

  • D- AND F-BLOCK ELEMENTS

    PRADEEP|Exercise VALUE BASED QUESTIONS|2 Videos

  • CORDINATION COMPOUNDS

    PRADEEP|Exercise Important Questions|28 Videos

  • ELECTROCHEMISTRY

    PRADEEP|Exercise IMPORTANT QUESTIONS FOR BOARD EXAMINATION|25 Videos

Similar Questions

Explore conceptually related problems

In acidec medium, H_(2)O_(2) changes Cr_(2)O_(7)^(2-) to CrO_(5) which has two (-O-O-) bonds. Oxidation state of Cr in CrO_(5) is

The oxidation state of Cr in CrO_(5) is

The oxidation state of Cr in CrO_(5) is:

PRADEEP-D- AND F-BLOCK ELEMENTS-COMPETITIONS FOCUS
  1. KMnO(4)gets reduced to

    Text Solution

    |

  2. The colour of KMnO(4) is due to

    Text Solution

    |

  3. In acidic medium, H(2)O(2) changes Cr(2)O(7)^(2-) to CrO(5) which has ...

    Text Solution

    |

  4. The reaction of aqueous KMnO(4) with H(2)O(2) i acidic conditions give...

    Text Solution

    |

  5. Name the gas that can readily decolourise acidified KMnO(4) solution:

    Text Solution

    |

  6. Gadolinium belongsd to 4f series. It's atomic number is 64. which of t...

    Text Solution

    |

  7. The electronic configuration of Eu (Atomic No. 63), Gd (Atomic No. 64)...

    Text Solution

    |

  8. Cerium (Z= 58) is an important nember of the lanthanoids . Which of th...

    Text Solution

    |

  9. The atomic number of cerium (Ce) is 58. The correct electronic con...

    Text Solution

    |

  10. The electronic configuration of Gd^(2+)is :

    Text Solution

    |

  11. Which of the following exhibits only +3 oxidation state?

    Text Solution

    |

  12. Lanthanide contraction is observed in:

    Text Solution

    |

  13. Because of lanthnoid contraction, which of the following pairs of elem...

    Text Solution

    |

  14. The correct order of ionic radii Y^(3+) , La^(3+) , Eu^(3+) and Lu^(3+...

    Text Solution

    |

  15. The correct order of ionic radii of Ce, La, Pm and Yb in +3 oxidation ...

    Text Solution

    |

  16. Identify the incorrect statement among the following:

    Text Solution

    |

  17. Knowing that the chemistry of lanthanoids (Ln) is dominated by its +3 ...

    Text Solution

    |

  18. Among the following lanthanoid ions, the paramagnetic ion is

    Text Solution

    |

  19. Consider the following statement in respect of Lantinanoids : (i) Th...

    Text Solution

    |

  20. In context of the lanthanoids, which of the following statements is no...

    Text Solution

    |