Home
Class 12
CHEMISTRY
F(2) is prepared by the electrolysis of ...

`F_(2)` is prepared by the electrolysis of molten `KHF_(2)` and anhydrous `HF`.

Text Solution

Verified by Experts

The correct Answer is:
T

Moissan in `1896` prepared `F_(2)` as `:`

At anode `:2F^(c-)rarr F_(2)+2e^(-)`
At cathode `: k^(O+)+e^(-)rarr K`
`K+2HF rarr 2KF+F_(2)`
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    CENGAGE CHEMISTRY|Exercise Archieves (Linked Comprehension )|13 Videos
  • ELECTROCHEMISTRY

    CENGAGE CHEMISTRY|Exercise Archieves Multiple Correct Ansers|2 Videos
  • ELECTROCHEMISTRY

    CENGAGE CHEMISTRY|Exercise Exercisefill In The Blanks|25 Videos
  • D AND F BLOCK ELEMENTS

    CENGAGE CHEMISTRY|Exercise Archives Subjective|29 Videos
  • GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF ELEMENTS

    CENGAGE CHEMISTRY|Exercise Archives (Subjective)|14 Videos

Similar Questions

Explore conceptually related problems

Electrolysis of molten anphdrous calcium chloride produces .

The electrolysis of molten KCl. MgCl_(2) . 6H_(2)O gives

The electrolysis of molten hydrolith produces_____gas at anode.

Alkali metals are obtained by the electrolysis of the molten salts and not by the electrolysis of their aqueous solutions. Give reason.

Assertion (A): Potassium cannot be obtained by the electrolysis of used KCI in molten CaCI_(2) . Reason (R ): Metallic potassium is soluble in molten CaCI_(2) . Thus, the cell for electrolysis gets short circuited.

Which of the following metals are extracted by the electrolysis of their molten chlorides?

In the electrolysis of molten alumina during the manufacture of aluminium:

CENGAGE CHEMISTRY-ELECTROCHEMISTRY-Exercisetrue / False
  1. The cell potential becomes half if the cell reaction is divided by 2 t...

    Text Solution

    |

  2. Rusting of Fe is quicker in saline water than in ordinary water.

    Text Solution

    |

  3. F(2) is prepared by the electrolysis of molten KHF(2) and anhydrous HF...

    Text Solution

    |

  4. In Hall's process for the preparation of Al, graphite anode has a long...

    Text Solution

    |

  5. In Down's process for the manufacture of sodium , CaCl(2), is added to...

    Text Solution

    |

  6. In Castner - Kellner cell for the manufacture of NaOH( caustic soda ),...

    Text Solution

    |

  7. The amount of charge carried by an electrone is the same as carried by...

    Text Solution

    |

  8. The same quantity of electricity is passed through Al(2)(SO(4))(3) and...

    Text Solution

    |

  9. Metals always liberate H(2)(g) from acids.

    Text Solution

    |

  10. Sn^(2+) and Fe^(3+) cannot exist in the same solution.

    Text Solution

    |

  11. The addition of a crystal of I(2) to NaBr turns the solution violet.

    Text Solution

    |

  12. The addition of Br(2) to NaI turns the solution violet.

    Text Solution

    |

  13. Lead storage battery has anode and cathode made up of Pb.

    Text Solution

    |

  14. Electrode potential for the electrode M^(n+)|M with concerntration is ...

    Text Solution

    |

  15. In the electroplating of silver,AgNO(3) solution is usually used as an...

    Text Solution

    |

  16. The conductance of electrolyte solution increases wih temperature.

    Text Solution

    |

  17. Resistivity is reciprocal of molar conductivity of electrolyte.

    Text Solution

    |

  18. Cell constant has unit m^(-1).

    Text Solution

    |

  19. The conductivity of molten KCl is due to the movement of K^(o+) and Cl...

    Text Solution

    |

  20. Solid KCl is a good conductor of electricity.

    Text Solution

    |