Home
Class 12
CHEMISTRY
At 25^(@)C , the molar conductance of 0....

At `25^(@)C` , the molar conductance of 0.007 M hydrofluoric acid is 150 `"mho cm^(2) mol^(-1)` and `^^ _(@) = 500 "mho" cm^(2) mol^(-1)`. The value of the dissociation constant of the acid at the given concentration at `25^(@) C` is _________.

A

`7 xx 10^(-4)`

B

`7 xx 10^(-5)`

C

`9 xx 10^(-3)`

D

`9 xx 10^(-4)`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    TARGET PUBLICATION|Exercise EVALUATION TEST|19 Videos

  • ELECTROCHEMISTRY

    TARGET PUBLICATION|Exercise CRITICAL THINKING|76 Videos

  • D AND F-BLOCK ELEMENT

    TARGET PUBLICATION|Exercise EVALUATION TEST|15 Videos

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    TARGET PUBLICATION|Exercise Evaluation Thinking|15 Videos

Similar Questions

Explore conceptually related problems

The conductivity of 0.001 M acetic acid is 5xx10^(-5)S cm^(-1) and ^^^(@) is 390.5 S cm^(2) "mol"^(-1) then the calculated value of dissociation c onstnat of acetic acid would be

Hydrofluoric acid is a weak acid. At 25^(@)C , the molar conductivity of 0.002 M HF is 176.2 ohm^(-1) cm^(2) mol^(-1) . If its Lamda_(m)^(oo) = 405.2 ohm^(-1) cm^(2) mol^(-1) , calculate its degree of dissociation and equilibrium constant at the given concentration.

The equivalent conductance of M//32 solution of a weak monobasic acid is 6.0 mho cm^(2) eq^(–1) and at infinite dilution is 200 mho cm^(2) eq^(–1) . The dissociation constant of this acid is:

The equivalent conductance of M//32 solution of a weak monobasic acid is 8.0 " mho cm"^(2) and at infinite dilution is 400 mho cm^(2) . The dissociation constant of this acid is :

The equivalent conductance of (M)/(20) solution of a weak momobasic acid is 10 mhos cm^(2) and at infinite dilution is 200 mhos cm^(2) . The dissociation consant of this acid is :-

Acetic acid is a weak acid. The molar conductances of 0.05 M acetic acid at 25^@C is 7.36 S " cm"^(2) "mol"^(-1) . If its ^^^_m^(oo) is 390.72 S cm^(2)"mol"^(-1) . The value of equilibrium constant is

For 0.0128 N solution fo acetic at 25^(@)C equivalent conductance of the solution is 1.4 mho cm^(3) eq^(-1) and lambda^(oo) = 391 mho cm^(2)eq^(-1) . Calculate dissociation constant (K_(a)) of acetic acid.

Hydrofluoric acid is a weak acid. At 25^(@)C , the molar conductivity of 0.002 M HF is 176.2 Omega^(-1)cm^(2) mol^(-1) . If its Lambda_(m)^(@)=405.2Omega^(-1)cm^(2)mol^(-1) . Equilibrium constant at the given concentration is

TARGET PUBLICATION-ELECTROCHEMISTRY-COMPETITIVE THINKING
  1. The molar conductivity of a 0.5 mol//dm^(3) solution of AgNO(3) with e...

    Text Solution

    |

  2. Resistance of 0.2 M solution of an electrolue is 50 Omega. The speci...

    Text Solution

    |

  3. At 25^(@)C , the molar conductance of 0.007 M hydrofluoric acid is 150...

    Text Solution

    |

  4. Cd|Cd^(+2)"||"Fe^(+3), Fe^(+2)|Pt which of the following reaction occu...

    Text Solution

    |

  5. The overall reaction taking place at anode during eelctrolysis of fu...

    Text Solution

    |

  6. What products are formed during the electrolysis of a concentrated aqu...

    Text Solution

    |

  7. The metal that cannot obtained by electrolysis of an aqueous solution ...

    Text Solution

    |

  8. According to Faraday's first law

    Text Solution

    |

  9. How may coulombs of electricity are required for the oxidation of one ...

    Text Solution

    |

  10. How many Faradays of electricity are required to deposit 10 g of calci...

    Text Solution

    |

  11. Number of Faraday's required to deposit 4 g of H(2) is .

    Text Solution

    |

  12. The number of moles of electrons passed when current of 2 A is passed ...

    Text Solution

    |

  13. Aluminium oxide may be electrolysed at 1000^(@)C to furnish aluminium ...

    Text Solution

    |

  14. When, during electrolysis of a solution of AgNO(3) 9650 colombs of cha...

    Text Solution

    |

  15. The quantity of electricity required to electrolyse separately 1 M aqu...

    Text Solution

    |

  16. When one coulomb of charge is passed the quantity of silver deposited ...

    Text Solution

    |

  17. If 9650 coulombs of electricity is passed through a copper sulphate so...

    Text Solution

    |

  18. During the electrolysis of molten sodium chloride, the time required t...

    Text Solution

    |

  19. When 1 F of electricity is passed through acidulated water O(2) ev...

    Text Solution

    |

  20. A current of 10 amperes is passed through acidulated water for 80 minu...

    Text Solution

    |