Home
Class 12
CHEMISTRY
A 0.01m aqueous solution of K(3)[Fe(CN)(...

A `0.01m` aqueous solution of `K_(3)[Fe(CN)_(6)]` freezes ar `-0.062^(@)C`. What is the apparent percentage of dissociation? `[K_(f)` for water `= 1.86]`

Text Solution

Verified by Experts

The correct Answer is:
`0.78%`
`{:(DeltaT_(f) = iK_(f)m ,0.062 =ixx 1.86 xx 0.01),(i = 3.33 ,alpha = (i-1)/(n-1)),(alpha rArr (3.33-1)/(4-1) ,alpha rArr 0.777):}`
Promotional Banner

Topper's Solved these Questions

  • SOLUTIONS

    ALLEN|Exercise EXERCISE-04 [B]|20 Videos

  • SOLUTIONS

    ALLEN|Exercise EXERCISE-05 [A]|46 Videos

  • SOLUTIONS

    ALLEN|Exercise EXERCISE-03|22 Videos

  • S-BLOCK ELEMENTS

    ALLEN|Exercise EXERCISE -3|1 Videos

  • Some Basic Concepts of Chemistry (Mole concept)

    ALLEN|Exercise All Questions|39 Videos

Similar Questions

Explore conceptually related problems

0.01 molal aqueous solution of K_(3)[Fe(CN)_(6)] freezes at -0.062^(@)C . Calculate percentage dissociation (k_(f)=1.86)

A 0.01 m aqueous solution of potassium ferricy freezes at -0.062^(@)C . What is the apparent percentage of dissociation? (K_(3) for H_(2)O -1.86) . Strategy: Potassium is K_(3)[Fc(CN)_(6)] . The appearent percentage of dissociation is degree of dissociation x 100%. To calculate degree of dissociation we must determine the value of van't hoff factor for which we need to work out calculated colligative property.

A solution containing 0.85 g of ZnCI_(2) in 125.0g of water freezes at -0.23^(@)C . The apparent degree of dissociation of the salt is: (k_(f) for water = 1.86 K kg mol^(-1) , atomic mass, Zn = 65.3 and CI = 35.5)

0.1mole aqueous solution of NaBr freezes at - 0.335^@C at atmospheric pressure , k_f for water is 1.86^@C . The percentage of dissociation of the salt in solution is

A 0.5% aqueous solution of KCl was found to freeze at -0.24^(@)C . Calculate the Van,t Hoff factor and degree of dissociation of the solute at this concentration. ( K_(f) for water = 1.86 K kg mol ^(-1) )

ALLEN-SOLUTIONS-EXERCISE-04 [A]
  1. The vapour pressure of ethanol and methanol ate 44.5 mm Hg and 88.7 mm...

    Text Solution

    |

  2. The vapour pressure of pure benzene at a certain temperature is 640 mm...

    Text Solution

    |

  3. Addition of 0.643g of a compound to 50mL of benzene (density: 0.879g m...

    Text Solution

    |

  4. A solution containing 30g of a nonvolatile solute in exactly 90g water...

    Text Solution

    |

  5. The freezing point of ether was lowered by 0.60^(@)Con dissolving 2.0g...

    Text Solution

    |

  6. The addition of 3g of a substance to 100g C CI(4)(M = 154 g mol^(-1)) ...

    Text Solution

    |

  7. To 500cm^(3) of water, 3.0 xx 10^(-3) kg acetic acid is added. If 23% ...

    Text Solution

    |

  8. A 0.01m aqueous solution of K(3)[Fe(CN)(6)] freezes ar -0.062^(@)C. Wh...

    Text Solution

    |

  9. The degree of dissociation of Ca(NO(3))(2) in a dilute aqueous solutio...

    Text Solution

    |

  10. A solution containing 0.11kg of barium nitrate in 0.1kg of water boils...

    Text Solution

    |

  11. The vapour pressure of two pure liquids, A and B that form an ideal so...

    Text Solution

    |

  12. Sea water is found to contain 5.85% NaCI and9.50% MgCI(2) by weight of...

    Text Solution

    |

  13. Find the freezing point of a glucose solution whose osmotic pressure a...

    Text Solution

    |

  14. The latent heat of fusion of ice is 80 calories per gram at 0^(@)C. Wh...

    Text Solution

    |

  15. At 300K, two solutions of glucose in water of concentration 0.01M and ...

    Text Solution

    |

  16. At 10^(@)C, the osmotic pressure of urea solution is 500 mm.The soluti...

    Text Solution

    |

  17. A 0.1M solution of potassiu ferrocyanide is 46% dissociated at 18^(@)C...

    Text Solution

    |