Home
Class 12
CHEMISTRY
At 25∘C, the molar conductance of 0.007M...

At 25∘C, the molar conductance of 0.007M hydrofluoric acid is 150 mho cm2 mol−1  and Λ∘m=500 mho cm2 mol−1. The value of the dissociation constant of the acid at the gas concentration at 25∘C is

A

`1.25xx10^-6`

B

`6.25xx10^-4`

C

`1.25xx10^-4`

D

`1.25xx10^-6`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    MODERN PUBLICATION|Exercise EXERCISE|529 Videos

  • d-AND f- BLOCK ELEMENTS

    MODERN PUBLICATION|Exercise EXERCISE|1089 Videos

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    MODERN PUBLICATION|Exercise EXERCISE|303 Videos

Similar Questions

Explore conceptually related problems

The values of limiting ionic conductance of H+ and HCOO- ions are respectively 347 and 53 S cm2 mol−1 at 298K. If the molar conductance of 0.025M methanoic acid at 298K is 40 S cm2 mol-1 the dissociation constant of methanoic acid at 298K is

The molar conductance of ammonium hydroxide at concentration 0.1M and 0.01M are 3.6 and 34.0 Scm^2 mol^-1 respectively. Calculate the degree of dissociation of NH_4OH at these concentration. Molar conductance at infinite dilution for NH_4OH is 271.1 ohm^-1 cm^2 mol^-1 .

The conductivity of 0.001028 mol L^(-1) acetic acid is 4.95 xx 10^-5 S cm^-1 . Calculate its dissociation constant if A_m^@ for acetic acid is 390.5 S cm^2 mol^(-1).

What is the ionization constant of an acid if the hydronium ion concentration of a 0.40 M solution is 1.40xx10^(-4) M?

The molar concentration of acetic acid at infinite dilution is 390.7 S cm^2 mol^-1 . Calculate the molar condcutance of 0.01M acetic acid solution, given that the dissociation constant of acetic acid is 1.8xx10^-5

The molar conductivity of 1.5 M solution of an electrolysis is found to be 138.9 S cm^2 mol^-1 . Calculate the conductivity of this solution?

The molar conductivity of 0.025 mol L^-1 methanoic acid is 46.1 S cm^2 mol^-1 . Calculate its degree of dissociation and dissociation constant. Given (H^+) = 349.6 S cm^2 mol^-1 and (HCOO ) = 54.6 S cm^2 mol^(-1).

If limiting molar conductivity of Ca^(2+) and Cl^(-) are 119.0 and 76.3 S cm^2 mol^(-1) , then the value of limiting molar conductivity of CaCl_2 will be :

Given the following molar conductivity at 25^(@) C:, HCl,426 Omega^(-1)cm^2mol^(-1) , NaCl, 126Omega^(-1)cm^2mol^(-1) , NaC(sodium crotonate), 83Omega^(_1)cm^2mol^(-1) . What is the dissciation constant of crotonic acid,if the conductivity of a 0.001 M crotonic acid solution is 3.83xx10^(-5)Omega^(-1)cm^(-1) ?

MODERN PUBLICATION-ELECTROCHEMISTRY-EXERCISE
  1. State and explain Kohlrausch's law. How would you determine the molar ...

    Text Solution

    |

  2. Al2O3 is reduced by elecrrolysis at low potentals and high current. If...

    Text Solution

    |

  3. At 25∘C, the molar conductance of 0.007M hydrofluoric acid is 150 mho ...

    Text Solution

    |

  4. For the reduction of silver ions with copper metal the standard cell p...

    Text Solution

    |

  5. Why does the conductivity of a solution decrease with dilution?

    Text Solution

    |

  6. E^@ of three metals A, B, C are -1.4 V, + 0.6V, - 3.4V respectively. ...

    Text Solution

    |

  7. if the E(cell)^@ for a given reaction has a negative value, then which...

    Text Solution

    |

  8. The electrode potentiasl for Cu^(2+)(aq)+barerarrCu^(+)(aq) and Cu^(+)...

    Text Solution

    |

  9. Give the standard electrode potentials: Mg^2+ / Mg = -2.37 V, Cr^3+/Cr...

    Text Solution

    |

  10. Limiting molar conductivity of NH4OH is equal to

    Text Solution

    |

  11. At 25^@C molar conductance of 0.1 molar aqueous solution of ammonum hy...

    Text Solution

    |

  12. In the button cell widely used for watches and other devices, the foll...

    Text Solution

    |

  13. A hydrogen gas electrode is made by dipping platinum wire in a solutio...

    Text Solution

    |

  14. When 0.1 mol MnO4^(2-) is oxidised, the quantity of electricity req...

    Text Solution

    |

  15. The weight of silver displaced by a quantity of electricity which disp...

    Text Solution

    |

  16. The device that converting energ into mechanical energy is called…. .

    Text Solution

    |

  17. What pressure of H2 would be required to make the e.m.f of hydrogen el...

    Text Solution

    |

  18. The molar conductivity of a 0.5 mol/dm3 solution of AgNO3 with electro...

    Text Solution

    |

  19. During the eletrolysis of molten sodium chloride, the time required to...

    Text Solution

    |

  20. The number of electrons delivered at the cathode during electrolysis b...

    Text Solution

    |