Home
Class 12
CHEMISTRY
A 0.2 molal aqueous solution of a weak a...

A `0.2` molal aqueous solution of a weak acid `HX` is `20%` ionized. The freezing point of the solution is `(k_(f) = 1.86 K kg "mole"^(-1)` for water):

A

`-0.45^(@)C`

B

`-0.9^(@)C`

C

`-0.31^(@)C`

D

`-0.53^(@)C`

Text Solution

Verified by Experts

The correct Answer is:
A
`-(T-0) = 1.2 xx 0.2 xx 1.86`
`T =- 0.45^(@)C`
Promotional Banner

Topper's Solved these Questions

  • SOLUTIONS

    ALLEN|Exercise EXERCISE-03|22 Videos

  • SOLUTIONS

    ALLEN|Exercise EXERCISE-04 [A]|17 Videos

  • SOLUTIONS

    ALLEN|Exercise EXERCISE -01|53 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

A 0.2 molal aqueous solution of weak acid (HX) is 20% ionised. The freezing point of this solution is (Given, K_(f) = 1.86^(@) C m^(-1) for water)

A 0.2 molar aqueous solution of a weak acid (HX) is 20% ionised . The freezing point of the solution is: (Given: K_(f)=1.86^(@) C kg" "mol^(-1)" for water")

A 0.2 molal aqueous solution of a week acid (HX) is 20 % ionised,The frrezing point of this solution is (Given k_(f)=1.86^(@)Ckg mol^(-1) for water) :

A 0.5 molal aqueous solution of a weak acid (HX) is 20 per cent ionized.The lowering in freezing point of this solution is (K_(f)=1.86 "K/m for water")

If 0.2 molal aqueous solution of a weak acid (HA) is 40% ionised then the freezing point of the solution will be ( K_f for water = 1.86^@ C

ALLEN-SOLUTIONS-EXERCISE -02
  1. The decreases in the freezing point of an aqueoues solution of a subst...

    Text Solution

    |

  2. The molal boiling point constant of water is 0.573^(@)C kg "mole"^(-1)...

    Text Solution

    |

  3. A 0.2 molal aqueous solution of a weak acid HX is 20% ionized. The fre...

    Text Solution

    |

  4. The boiling point of an azeotropic mixture of water and ethyl alcohol ...

    Text Solution

    |

  5. The boiling point of an aqueous solution of a non-volatile solute is 1...

    Text Solution

    |

  6. An aqueous solution of NaCI freezes at -0.186^(@)C. Given that K(b(H(2...

    Text Solution

    |

  7. The van't Hoff factory i for a compound which undergo dissociationin o...

    Text Solution

    |

  8. A solution of 0.450g of urea (mol.wt 60) in 22.5g of water showed 0.17...

    Text Solution

    |

  9. Colligative properties of the solution depend on:

    Text Solution

    |

  10. Which of the following solutions will have highest boiling point:

    Text Solution

    |

  11. In cold countries, ethylene glycol is added to water in the radiators ...

    Text Solution

    |

  12. An azeotropic solution of two liquids has a boiling point lower than e...

    Text Solution

    |

  13. When mercuric iodide is added to the aqueous solution of potassium iod...

    Text Solution

    |

  14. For an ideal solution containing a nonvolatile solute, which of the fo...

    Text Solution

    |

  15. For a dilute solution containing a nonvolatile solute, the molar mass ...

    Text Solution

    |

  16. For a silute solution containing a nonvolatile solute, the molar mass ...

    Text Solution

    |

  17. An aqueous solution of acetone, CH(3)COCH(3) is 10.00% acetone by weig...

    Text Solution

    |

  18. The freezing poing of an aqueous solution of a non-electrolyte is -0.1...

    Text Solution

    |

  19. P(A)=(235y -125xy)mm of HgP(A) is partial pressure of A,x is mole frac...

    Text Solution

    |

  20. Of the following measurements the one most suitable for the determinat...

    Text Solution

    |