Home
Class 11
CHEMISTRY
Given HF + H2O overset( Ka) hArr H3 O^(...

Given `HF + H_2O overset( K_a) hArr H_3 O^(+) +F ^(-) , F^(-) +H_2O overset( K_a) hArr HF +OH^(-) `Which relation is correct:

A

`K_axx K_b =K_W`

B

` K_b =1//K_W`

C

` K_a=K_b =K_W`

D

` K_a//K_b =K_W`

Text Solution

Verified by Experts

The correct Answer is:
A
` HF +H_2O hArr H_(12) O ^(+) +F^(-) ,K_a`
`(F^(-) +H_2O hArr HF +OH^(-) ,K_b )/(2H_2hArr H_3O ^(+) +OH^(-) ,K_W=K_a.K_b) `
Promotional Banner

Topper's Solved these Questions

  • IONIC EQUILIBRIUM

    AAKASH SERIES|Exercise LECTURE SHEET (EXERCISE -II LEVEL -II (ADVANCED) (More than One correct answer Type Questions))|4 Videos

  • IONIC EQUILIBRIUM

    AAKASH SERIES|Exercise LECTURE SHEET (EXERCISE -II LEVEL -II (ADVANCED) ( Linked comprehension Type Questions))|6 Videos

  • IONIC EQUILIBRIUM

    AAKASH SERIES|Exercise LECTURE SHEET (EXERCISE -II LEVEL -I (MAIN) (Straight Objective Type Questions))|54 Videos

  • HYDROGEN AND ITS COMPOUNDS

    AAKASH SERIES|Exercise QUESTIONS FOR DESCRIPTIVE ANSWERS|20 Videos

  • ISOMERISM

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE ( PRACTICE SHEET (ADVANCED) INTEGER TYPE QUESTIONS)|10 Videos

Similar Questions

Explore conceptually related problems

C_2 H_5 OH + CH_3 COOH overset(H_2 SO_4)hArr CH_3 COO C_2 H_5 + H_2 O . Here H_2 SO_4 acts is

C_2 H_5 OH overset(K_2 Cr_2 O_7//H^+)to (X) overset(O)to (Y) , What is 'Y' ?

H_2CO_3 ionises in two stages as represented below H_2CO_3 +H_2O hArr H_3O^(+) +HCO_3^(-) , HCO_3^(-) +H_2O hArr H_3O^(+) CO_3^(2-) the no. of conjugate acid -base pairs in the above reaction are

C_(2) H_(5) OH + CH_(3) COOH overset(H_(2) SO_(4)) (hArr) CH_(3) COO C_(2) H_(5) + H_(2) O . Here H_(2) SO_(4) acts as

For the reaction : F_(2)+H_(2)O overset("Ice cold") underset("temperature") rarrHOF + HF which one is not correct ?

In aqueous solutions H_(2) SO _(4) ionises as: H _(2) SO_(4) + H _(2) O hArr H _(2) SO _(24 ) ^(-) + H _(3) O ^(+) , K a _(1) H_(2) SO _(4) ^(-) + H_(2) O hArr SO _(4) ^(2-) + H_(3) O ^(+) , Ka _(2). The relation between Ka _(1) and Ka _(2) is

CH_3 - overset(O ) overset(|| ) C -H overset(CF_3 CO_3 H) to X: 'X' will be

AAKASH SERIES-IONIC EQUILIBRIUM -LECTURE SHEET (EXERCISE -II LEVEL -II (ADVANCED) (Straight Objective Type Questions))
  1. The P^(H) of a solution is 11. lt is diluted by 1000 times. Then the P...

    Text Solution

    |

  2. The P^(H) of 40 ml of 0.02 M HCl will not be changed by adding

    Text Solution

    |

  3. The P^(H) of HCI is 1. The amount of NaOH to be added to 100 ml of suc...

    Text Solution

    |

  4. How many grams of NaOH can neutralise 100 ml of H2SO4 solution with ...

    Text Solution

    |

  5. 20 ml of 0.4 M H(2),SO(4) , and 80 ml of 0.2 M NaOH are mixed. Then th...

    Text Solution

    |

  6. x xx 10^(-2) gm of NaOH should be used up to prepare 200ml of a soluti...

    Text Solution

    |

  7. What is the concentration of CN^(-) ions in a solution with 0.1 M HC...

    Text Solution

    |

  8. P^(H) of a solution of the mixture of 0.1 HCl and 0.1N CH3 COOH is (...

    Text Solution

    |

  9. Given HF + H2O overset( Ka) hArr H3 O^(+) +F ^(-) , F^(-) +H2O over...

    Text Solution

    |

  10. Liquid ammonia ionises to a slight extent. Its self ionisation constan...

    Text Solution

    |

  11. The P^(H )of a solution is 6. Its [H(3),O^(4)] is decreased by 1000 ti...

    Text Solution

    |

  12. The P^(H) of a solution is 11. lt is diluted by 1000 times. Then the P...

    Text Solution

    |

  13. The P^(H) of 40 ml of 0.02 M HCl will not be changed by adding

    Text Solution

    |

  14. The P^(H) of HCI is 1. The amount of NaOH to be added to 100 ml of suc...

    Text Solution

    |

  15. How many grams of NaOH can neutralise 100 ml of H2SO4 solution with ...

    Text Solution

    |

  16. 20 ml of 0.4 M H(2),SO(4) , and 80 ml of 0.2 M NaOH are mixed. Then th...

    Text Solution

    |

  17. Among the following (a) On dilution the P^(H) of an acid increases...

    Text Solution

    |

  18. What is the concentration of CN^(-) ions in a solution with 0.1 M HC...

    Text Solution

    |

  19. P^(H) of a solution of the mixture of 0.1 HCl and 0.1N CH3 COOH is (...

    Text Solution

    |

  20. Given HF + H2O overset( Ka) hArr H3 O^(+) +F ^(-) , F^(-) +H2O over...

    Text Solution

    |