Home
Class 12
CHEMISTRY
HCOOH (aq) hArr H^+(aq) +HCOO^-(aq),Ka=1...

`HCOOH (aq) hArr H^+`(aq) +`HCOO^-`(aq),`K_a=1.7xx10^(-4)`
The ionization of formic acid is represented above.Calculate `[H^+]` of a solution initially containing 0.10 M HCOOH and 0.050 M HCOONA :

A

`8.5xx10^(-5) M`

B

`3.4xx10^(-4) M`

C

`4.1xx10^(-3) M`

D

`1.8xx10^(-2) M`

Text Solution

Verified by Experts

The correct Answer is:
b
Promotional Banner

Topper's Solved these Questions

  • HYDROGEN AND ITS COMPOUNDS

    GRB PUBLICATION|Exercise Subjective type|8 Videos
  • LIQUID SOLUTIONS

    GRB PUBLICATION|Exercise 11|12 Videos

Similar Questions

Explore conceptually related problems

What is the [HCOO^-] in the solution that contains 0.015 M HCOOH and 0.02 M HCl ? K_a(HCOOH)=1.8xx10^(-4)

What concentration of HCOO^(-) is present in a solution of weak of 0.01 M HCOOH (K_(a)=1.8xx10^(-4) and 0.01 M HCl?

Calculate [H^+],[HCOO^(-)] and [OCN^(-)] in a solution that contains 0.1 M HCOOH (K_a=2.4xx10^(-4)) and 0.1 M HOCN (K_a=4xx10^(-4)) .

HOCl(aq)toH^(+)(aq)+OCl^(-)(aq) The ionization of hypochlorous acid represented above has K=3.0xx10^(-8) at 25^@C .What is K for this reaction ? Ocl^(-)(aq)+H_2O(l)hArr HOCl(aq)+OH^(-)(aq)

For a reaction, CH_(3)COOH(aq) hArr H^(+) (aq)+CH_(3)COO^(-)(aq) or HAc (aq) hArr H^(+)(aq)+Ac^(-)(aq) Evaluate the pH of the solution resulting on addition of 0.05M acetata ion to 0.05M acid solution (K_(a) = 1.8 xx 10^(-5))

Calculate pOH of 0.1 M aq. Solution of weak base BOH (K_(b)=10^(-7)) at 25^(@)C.

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) .

GRB PUBLICATION-IONIC EQUILIBRIUM-All Questions
  1. 1.0 L of an aqueous solution in which [H2CO3]=[HCO3^-]=0.10 M, has [H^...

    Text Solution

    |

  2. Which base is most suitable to prepare a buffer solution with a pH =11...

    Text Solution

    |

  3. HCOOH (aq) hArr H^+(aq) +HCOO^-(aq),Ka=1.7xx10^(-4) The ionization o...

    Text Solution

    |

  4. A student is asked to prepare a buffer solution with a pH of 4.00. Thi...

    Text Solution

    |

  5. What is the pH of a solution that is 0.20 M in HF and 0.40 M in NaF ? ...

    Text Solution

    |

  6. 1 M benzoic acid (pKa=4.20) and 1 M C6H5COONa solutions are given sepa...

    Text Solution

    |

  7. What is the difference in pH for 1//3 and 2//3 stages of neutralizatio...

    Text Solution

    |

  8. To prepare a buffer of pH 8.26, amount of (NH(4))(2)SO(4) to be added ...

    Text Solution

    |

  9. How many moles of NaOCI must be added to 150 mL of 0.025 MHOCI to obta...

    Text Solution

    |

  10. 1 M NaCl and 1 M HCl are present in an aqueous solution. The solution ...

    Text Solution

    |

  11. The pK(a) of a weak acid (HA) is 4.5. The pOH of an aqueous buffered s...

    Text Solution

    |

  12. A buffer solution contains 1 mole of (NH(4))(2)SO(4) and 1 mole of NH(...

    Text Solution

    |

  13. In which of the following combinations, is buffer action expected ? ...

    Text Solution

    |

  14. Which solution is not a buffer solution ?

    Text Solution

    |

  15. Which species has the lowest concentration in a solution prepared mixi...

    Text Solution

    |

  16. Which may be added to one litre of water to act a buffer?

    Text Solution

    |

  17. 50 mL of 2N acetic acid mixed with 10 mL of 1N sodium acetate solution...

    Text Solution

    |

  18. The pH of an acidic buffer mixture is:

    Text Solution

    |

  19. A certain buffer solution contains equal concentartion of X^(Theta) an...

    Text Solution

    |

  20. pH of a mixture containing 0.10 M X^(-) and 0.20 M HX is: [pK(b)(X^(-)...

    Text Solution

    |