Home
Class 11
CHEMISTRY
The pH of the a solution containing 0.4 ...

The pH of the a solution containing `0.4 M HCO_(3)^(-)` is :
`[K_(a_(1)) (H_(2)CO_(3)) = 4 xx 10^(-7), K_(a_(2)) (HCO_(3)^(-)) = 4 xx 10^(-11)]`

A

`10.4`

B

`10.1`

C

`6.1`

D

`8.4`

Text Solution

Verified by Experts

The correct Answer is:
D
`P^(H) = (P^(ka_(1)) + P^(ka_(2)))/(2)`
Promotional Banner

Topper's Solved these Questions

  • IONIC EQUILIBRIUM

    NARAYNA|Exercise Level-VI (H.W)|35 Videos

  • IONIC EQUILIBRIUM

    NARAYNA|Exercise Level-II (H.W)|51 Videos

  • HYDROGEN & ITS COMPOUNDS

    NARAYNA|Exercise LEVEL-4|21 Videos

  • PERIODIC TABLE

    NARAYNA|Exercise All Questions|568 Videos

Similar Questions

Explore conceptually related problems

The pH of a solution containing 0.4 M HCO_(3)^(-) and 0.2 M CO_(3)^(2-) is : [K_(a1)(H_(2)CO_(3))=4xx10^(-7) , K_(a2)(HCO_(3)^(-))=4xx10^(-11)]

Calculate [H^(o+)] in a soluton that is 0.1M HCOOH and 0.1 M HOCN. K_(a)(HCOOH) = 1.8 xx 10^(-4), K_(a) (HoCN) = 3.3 xx 10^(-4) .

Blood is buffered with CO_(2) " and " HCO_(3)^(-) . What is the ratio of the base concentration to the acid ( i.e., CO_(2) (aq) " plus " H_(2)CO_(3)) concentration to maintain the pH of blood at 7.4 ? The first dissociation constant of H_(2)CO_(3) (H_(2)CO_(3) hArr H^(+) + HCO_(3)^(-)) " is " 4.2xx10^(-7) where the H_(2)CO_(3) is assumed to include CO_(2)(aq) i.e., dissolved CO_(2) . [ log 4.2=0.6232]

NARAYNA-IONIC EQUILIBRIUM-Level-V (H.W)
  1. The percentage degree of hydrolysis of a salt of weak acid (HA) and we...

    Text Solution

    |

  2. 0.1 M formic acid solution is titrated against 0.1 M NaOH solution. Wh...

    Text Solution

    |

  3. The pH of the a solution containing 0.4 M HCO(3)^(-) is : [K(a(1)) (...

    Text Solution

    |

  4. The pH of the resultant solution of 20 mL of 0.1 M H(3)PO(4) and 20 mL...

    Text Solution

    |

  5. In a saturated solution of AgCl, NaCl is added gradually. The concentr...

    Text Solution

    |

  6. During the titration of a weak diprotic acid (H(2)A) against a strong ...

    Text Solution

    |

  7. Find moles of NH(4)Cl required to prevent Mg(OH)(2) from precipitating...

    Text Solution

    |

  8. A certain indicator (an organic dye) has pK(a)=5. For which of the fol...

    Text Solution

    |

  9. 50 ml of 0.05 M Na(2)CO(3) is titrated against 0.1 M HCl. On adding 40...

    Text Solution

    |

  10. Equilibrium constants of T(2)O (T or (1)^(3)H is an isotope " of "(1)^...

    Text Solution

    |

  11. The ionisation constant of an acid base indicator is 3' 10^(-5). The a...

    Text Solution

    |

  12. 20 mL of 0.1 M weak acid HA(K(a)=10^(-5)) is mixed with solution of 10...

    Text Solution

    |

  13. Calculate the ratio of [HXOO^(-)] and [F^(-)] in a mixture of 0.2 M HC...

    Text Solution

    |

  14. If first dissociation of X(OH)(32) is 100% where as second dissociatio...

    Text Solution

    |

  15. H(3)A is a weak triprotic acid (K(a1)=10^(-5),K(a2)=10^(-9),K(a3)=10^(...

    Text Solution

    |

  16. A solution cotaning 0.10 M in Ba(NO(3))(2) and 0.10 M in Sr(NO(3))(2)....

    Text Solution

    |

  17. A solution is 0.01 M Kl and 0.1 M KCl. If solid AgNO(3) is added to th...

    Text Solution

    |

  18. What is maximum pH required to prevent the precipitation of ZnS in a s...

    Text Solution

    |

  19. Which of the following statements is correct for a solution saturated ...

    Text Solution

    |

  20. A solution contians 0.1 M NaCl, 0.01 M NaBr and 0.001 M Nal.solid AgNO...

    Text Solution

    |