Home
Class 12
CHEMISTRY
Number of electrons involved in the redu...

Number of electrons involved in the reduction of `Cr_2O_7^(2-)` ion in acidic solution to `Cr^(3+)` is:

A

3

B

4

C

2

D

6

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • POLYMERS

    MBD PUBLICATION|Exercise QUESTION BANK|332 Videos
  • S- BLOCK ELEMENTS [ALKALI AND ALKALINE EARTH METALS]

    MBD PUBLICATION|Exercise QUESTION TYPE|512 Videos

Similar Questions

Explore conceptually related problems

The charge for the reduction of 1 mole of Cr_2O_7^(2-) ions to Cr^(3+) is :

Find the magnetic moment of Cr^(3+) ion.

The number of d-electrons of Cr(Z=24) in [Cr(H_2O)_6]^(3+) ion :

What is the oxidation number of Cr in Cr_(2)O_(7)^(2-) ?

Balance the equation : Cr_3O_7^(2-) + H^+ + I^- rarr Cr^3 + I2 +H_2O

Find magnetic moment of Cr^2+ ion.

Balance the equation : Cr_2O_7^(2-) +H^+ + S^2 rarrCr^3 + S + H_2O

MBD PUBLICATION-REDOX REACTIONS-QUESTION BANK
  1. The oxidation state of S in Na2S4O6 is:

    Text Solution

    |

  2. In which of the following oxidation number of chlorine is +5 is :

    Text Solution

    |

  3. Number of electrons involved in the reduction of Cr2O7^(2-) ion in aci...

    Text Solution

    |

  4. A compound of Xe and F is found to have 53.3%Xe in this compound is :

    Text Solution

    |

  5. An element which never has a positive oxidation number in any of its c...

    Text Solution

    |

  6. The oxidation number of phosphorus in Ba(H2PO2)2 is :

    Text Solution

    |

  7. The number of electrons lost or gained during the change, Fe + H2O rar...

    Text Solution

    |

  8. Oxidation number of S in H2SO5 is:

    Text Solution

    |

  9. Ocidation number of Fe in Fe3O4 are :

    Text Solution

    |

  10. Pb shows oxidation state of

    Text Solution

    |

  11. Carbon reacts with oxygen to from two oxides, CO and CO2.This is becau...

    Text Solution

    |

  12. The oxidation number and covalency of sup,phur in the sulphur molecule...

    Text Solution

    |

  13. The most common oxidation state of an element is -2. The number of ele...

    Text Solution

    |

  14. In the reaction: 2Ag+2H2SO4 rarrAg2SO4 +2H2O +SO2,H2SO4 acts :

    Text Solution

    |

  15. In acidic medium, the reaction, MnO4^(1-) rarr Mn^(2+) involves :

    Text Solution

    |

  16. Which can have both +ve and -ve odidation states?

    Text Solution

    |

  17. In the equation, NO2^- + H2O rarr NO3^- +2H^++ ne- stand for :

    Text Solution

    |

  18. Which is not an oxidising agent ?

    Text Solution

    |

  19. LiAIH4 is used as :

    Text Solution

    |

  20. The oxidation state of phoshorus varies form :

    Text Solution

    |