Home
Class 12
CHEMISTRY
How many coulombs are required for the r...

How many coulombs are required for the reduction of 1 mol of `MnO_(4)^(-) " to " Mn^(2+)`?

A

96,500 Coulomb

B

4,28,500 Coulomb

C

48,200 Coulomb

D

48,000 Coulomb

Text Solution

Verified by Experts

The correct Answer is:
B
`MnO_4^(-)` oxidation number of Mn is `+7`.
`therefore Mn^(+7)+5e^(-) to Mn^(+2) therefore ` 5 mol of `e^(-)` = 4,82,500C
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    MARVEL PUBLICATION|Exercise Previous years Entrance Exams MCQ|55 Videos

  • ELECTROCHEMISTRY

    MARVEL PUBLICATION|Exercise Test your Grasp|50 Videos

  • D AND F BLOCK ELEMENTS

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP|60 Videos

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    MARVEL PUBLICATION|Exercise Test Your Grasp|30 Videos

Similar Questions

Explore conceptually related problems

The charge required for the reduction of 1 mol of MnO_(4)^(-) to MnO_(2) is

How many coulombs are required for the oxidation of 1 mol of H_(2)O_(2) ?

How many coulombs of electricity are required for the reduction of 1 mole of MnO_(4)^(-) to Mn^(2+) ?

How many coulombs are required for the oxidation of 1 mol of H_(2)O to O_(2) ?

MARVEL PUBLICATION-ELECTROCHEMISTRY-Test your Grasp
  1. How many coulombs are required for the reduction of 1 mol of MnO(4)^(-...

    Text Solution

    |

  2. An electric current is passed through an aqueous solution of the follo...

    Text Solution

    |

  3. Electrolysis involves oxidation and reduction respectively at .

    Text Solution

    |

  4. The metal which can not displace hydrogen from dil. H(2)SO(4) solution...

    Text Solution

    |

  5. The amount of electricity required to deposit one gram atom of Mg from...

    Text Solution

    |

  6. During electrolysis electrons flow from

    Text Solution

    |

  7. In a solution of CuSO(4) how much time will be required to preciitate ...

    Text Solution

    |

  8. 0.1 ampere current is passed for 10 seconds through Cu and Ag. The met...

    Text Solution

    |

  9. How many electrons are there in one coulomb of electricity?

    Text Solution

    |

  10. The emf of cell is 1.3 Volt. The positive electrode has potential of 0...

    Text Solution

    |

  11. How many Faradays are required to liberate one mole of O(2) gas at N.T...

    Text Solution

    |

  12. A silver cup is plated with silver by passing 965 coulombs of electric...

    Text Solution

    |

  13. A, B,C and D are four elements with E(oxd)^(0) as +2.82V, +2.71V, +1.6...

    Text Solution

    |

  14. During rusting of iron it gets

    Text Solution

    |

  15. The electrode potential of a silver electrode dipped in 0.1 M AgNO(3) ...

    Text Solution

    |

  16. A certain current liberated 0.504 g of hydrogen in 2 hours. How many g...

    Text Solution

    |

  17. The rusting of iron is catalysed by which of the following ?

    Text Solution

    |

  18. In a cell containing zinc electrode and hydrogen electrode,If the redu...

    Text Solution

    |

  19. E^(@) of Mg^(2+) || Mg, Zn^(2+) || Zn, and Fe^(2+)||Fe are -2.37V, -0....

    Text Solution

    |

  20. The reaction M^(2)+2e^(-) to M has standard potential of -0.66V . This...

    Text Solution

    |

  21. Rgw atomic weight of Al is 27. When a current of 5F is passed through ...

    Text Solution

    |