Home
Class 12
CHEMISTRY
The self ionisation constant for pure fo...

The self ionisation constant for pure formic acid K=`[HCOOH_2^+]``[HCOO^-]` has been estimated a `10^(-6) at room temperature. The density of formic acid is 1.22g/`cm^3` find the percentage of formic acid molecules in pure formic acid converted to formate ion.

A

`0.002%`

B

`0.004%`

C

`0.006%`

D

`0.008%`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • ENVIRONMENTAL CHEMISTRY

    MBD PUBLICATION|Exercise QUESTION BANK|299 Videos

  • GENERAL PRINCIPLES OF ISOLATION OF ELEMENTS

    MBD PUBLICATION|Exercise QUESTION BANK|564 Videos

Similar Questions

Explore conceptually related problems

Formic acid is 4.6% dissociated in a 0.1 N solution at 20^@C . The ionisation constant of formic acid is :

What volume of 1 M sodium formate solution should be added to 50 ml of 0.05 M formic acid to produce a buffer solution of (ph=4( PK_a of formic acid =3.80)?

50% neutralisation of a solution of formic acid ( K_a=2xx106(-4) ) with NaOH would result in a solution having a hydrogen ion concentration of :

2g of benzoic acid (C_(6)H_(5)COOH) dissolved in 25 g of benzene shows a depression in freezing point equal to 1.62 K. Molar depression constant for benzene is 4.9 K kg mol^-1 . What is the percentage association of acid if it forms double molecules (dimer) in solution ?

Acetic acid and propionic acid have K_a value 1.75xx10^(-5) and 1.3xx10^(-5) respectively at a certain temperature. An equimolar solution of a mixture of the two acid is partially neutralised by NaOH. How is the ratio of the contents of acetate and proponate ions related to the K_a value and the molarity ?

One gram of charcoal adsorbs 100 mL of 0.5 M -acetic acid to form a monolayer and the molarity of acetic acid reduces to 0.49. Calculate the surface area of charcoal adsorbed by each molecule of acetic acid. The surface area of charcoal is 3.01xx 10^2 m^2 g^(-1) .

Explain why formic acid has two different C-O bond lengths i.e. 1.23Å and 1.36Å , where in sodium formate two C-O bond are same having bond length 1.27Å .

Liquid ammonia ionises to a slight extent. At -50^@C its self ionisation constant K_(NH_3) = [NH_4^+] [NH_2^-] = 10^(-30) How many amide ions are present per cm^3 of pure liquid ammonia . (Assume N= 6.0xx10^(23) )?

MBD PUBLICATION-EQUILIBRIUM-QUESTION BANK
  1. 18 ml of mixture of acetic acid and sodium acetate required 6 ml of 0....

    Text Solution

    |

  2. A certain ion B^- has an Arhenius constant of basic character (equ. Co...

    Text Solution

    |

  3. Acetic acid and propionic acid have Ka value 1.75xx10^(-5) and 1.3xx10...

    Text Solution

    |

  4. The ionisation constant of NH4^+ in water is 5.6xx10^(-10) at 25^@C th...

    Text Solution

    |

  5. If PKbfor fluoride ion at 25^@C is 10.83. predict the ionisation const...

    Text Solution

    |

  6. Approximate PH of 0.10 M aqueous H2S solution having K1 and K2 for H2S...

    Text Solution

    |

  7. Which of the following species is more soluble in water ?

    Text Solution

    |

  8. The self ionisation constant for pure formic acid K=[HCOOH2^+][HCOO^-]...

    Text Solution

    |

  9. Liquid ammonia ionises to a slight extent. At -50^@C its self ionisati...

    Text Solution

    |

  10. What is the concentration of fluoracetic acid (Ka of acid = 2.6xx10^(...

    Text Solution

    |

  11. What molar concentration of NH3 provides a [OH^-] OF 1.5xx10^(-3) ? (K...

    Text Solution

    |

  12. 1 ml of 0.1 N Hcl is added to 999 ml solution of NaCl . The PH of the ...

    Text Solution

    |

  13. What is the volume of water needed to dissolve 1 g of BaSO4 (Ksp=1.1xx...

    Text Solution

    |

  14. The solubility of BaSO4 in water is 0.00233 g per litre at 30^@C . The...

    Text Solution

    |

  15. Formic acid is 4.6% dissociated in a 0.1 N solution at 20^@C . The ion...

    Text Solution

    |

  16. The dissociation constants of two acid HA1 and HA2 are 2.9xx10^(-4) an...

    Text Solution

    |

  17. In the hydrolytic equilibrium A^- + H2O hArr HA + OH^- Ka = 1.0 xx...

    Text Solution

    |

  18. For preparing a buffer solution of pH 6 BY mixing sodium acetate and a...

    Text Solution

    |

  19. At 20^@C the [Ag^+] in a saturated solution of Ag2CrO4 is 1.5xx10^(-4...

    Text Solution

    |

  20. Let the solubilities of AgCl in H2O 0.01 M CaCl2 0.01 M NaCl and 0.05 ...

    Text Solution

    |