Home
Class 11
CHEMISTRY
Solution of 0.1 N NH(4)OH and 0.1 N NH(4...

Solution of `0.1 N NH_(4)OH` and `0.1 N NH_(4)Cl` has `pH 9.25`, then find out `K_(b)` of `NH_(4)OH`.

A

9.25

B

4.75

C

3.75

D

8.25

Text Solution

Verified by Experts

The correct Answer is:
B
solution of `NH_(4)OH and NH_(4)Cl` acts as a basic buffere solution. For basic buffer solution.
`pOH=pK_(b)+"log"(["Salt"])/(["Base"])`
`pOH=14-pH=14-9.25=4.75`
`4.75=pK_(a)+"log" (0.1)/(0.1), " " pK_(a)=4.75`
Promotional Banner

Topper's Solved these Questions

  • ACIDS & BASES

    NARAYNA|Exercise EXERCISE-II (H.W.) (SOLUBILITY PRODUCT & COMMON ION EFFECT)|18 Videos

  • 14TH GROUP ELEMENTS

    NARAYNA|Exercise Subjective Questions|6 Videos

  • ALKANES

    NARAYNA|Exercise Integer Answer Type|7 Videos

Similar Questions

Explore conceptually related problems

Solution of 0.1 N NH_4 OH and 0.1 N NH_4CI has pH 9.25 . Then find out pK_b "of" NH_4OH

A solution consist of 0.2 M NH_(4)OH and 0.2 M NH_(4)Cl . If K_(b) of NH_(4)OH is 1.8 xx 10^(-5) , the [OH^(-)] of the resulting is

Calculate pH of the buffer solution containing 0.15 mole of NH_(4)OH " and " 0.25 mole of NH_(4)Cl. K_(b) " for " NH_(4)OH " is " 1.98 xx 10^(-5) .

What is the pH of solution obtained by mixing 100 mL of each 0.2 M NH_(4)Cl and 0.2M NH_(4)OH , if pK_(b) of NH_(4)OH is 4.2 ?

What is the pH of solution obtained by mixing 100 mL of each 0.2 M NH_(4)Cl and 0.2M NH_(4)OH , if pK_(b) of NH_(4)OH is 4.2 ?

NARAYNA-ACIDS & BASES-EXERCISE-III
  1. Solubility of MX(2) type electrolytes is 0.5xx10^(-4) mol//L, then fin...

    Text Solution

    |

  2. Which has the highest pH?

    Text Solution

    |

  3. Solution of 0.1 N NH(4)OH and 0.1 N NH(4)Cl has pH 9.25, then find out...

    Text Solution

    |

  4. The solubility product of AgI at 25^(@)C is 1.0xx10^(-16) mol^(2) L^(-...

    Text Solution

    |

  5. The rapid change of pH near the stoichiometric point of an acid-base t...

    Text Solution

    |

  6. The solubility product of a sparingly soluble salt AX(2) is 3.2xx10^(-...

    Text Solution

    |

  7. The correct relationship between the pH of isomolar solutions of sodiu...

    Text Solution

    |

  8. At 25^(@)C, the dissociation constant of a base. BOH is 1.0xx10^(-12)...

    Text Solution

    |

  9. H(2)S gas when passed through a solution of cations containing HCl pre...

    Text Solution

    |

  10. Which of the following pairs consitutes buffer?

    Text Solution

    |

  11. The hydrogen ion concentration of a 10^(-8) M HCl aqueous soultion at ...

    Text Solution

    |

  12. Calculate the pOH of solution at 25^(@)C that contains 1xx10^(-10) M o...

    Text Solution

    |

  13. A monoprotic acid in 0.1 M solution has K(a)=1.0xx10^(-5). The degree...

    Text Solution

    |

  14. Equimolar solution of the following were prepared in water separately....

    Text Solution

    |

  15. Equal volumes of three acid solutions of pH 3, 4 and 5 are mixed in a ...

    Text Solution

    |

  16. The dissociation equilibrium of a gas AB, can be represented as The d...

    Text Solution

    |

  17. The values of K(p(1)) and K(p(2)) for the reactions X hArr Y+Z ….(i...

    Text Solution

    |

  18. Which of the following molecules acts as a Lewis acid?

    Text Solution

    |

  19. What is the [OH]^(-) in the final solution prepared by mixing 20.0mL o...

    Text Solution

    |

  20. The ionization constant of ammonium hydroxide is 1.77xx10^(-5) at 298 ...

    Text Solution

    |