Home
Class 12
CHEMISTRY
0.48of a substance is dissolved in 10.6g...

`0.48`of a substance is dissolved in `10.6`g of `C_(6)H_(6)`.The freezing point of benzene is lowered by `1.8^(@)C`what will be the mol.wt.of the substance (`K_(f)`for benzene =`5`)

A

`250.2`

B

`90.8`

C

`125.79`

D

`102.5`

Text Solution

Verified by Experts

The correct Answer is:
C
`DeltaT_(f)=(1000.K_(f)w)/(mW)`
`m=(1000K_(f)w)/(cancelOT_(f)W)=(1000xx5xx0.48)/(1.8xx10.6)=125.79`
Promotional Banner

Topper's Solved these Questions

  • SOLUTIONS

    A2Z|Exercise Osmotic Pressure|40 Videos

  • SOLUTIONS

    A2Z|Exercise Van'T Hoff Factor|37 Videos

  • SOLUTIONS

    A2Z|Exercise Elevation Of Boiling Point|21 Videos

  • SOLID STATE

    A2Z|Exercise Section D - Chapter End Test|30 Videos

  • SURFACE CHEMISTRY

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

0.48 g of a substance is dissolved in 10.6 g of C_(6)H_(6) .The freezing point of benzene is lowered by 108^(@)C . What will be the mol.wt. of the ( K_(f) for benzene = 5 )

0.48 g of a substane was dissolved in 10.6g C_(6)H_(6) . The freezing point of benzene was lowered by 1.8^(@)C . Calculate m.w.t. of the substance. Molecular depression constant for benzene is 50 K"mol"^(-1) 100 g .

0.440 g of a substance dissolved in 22.2 g of benzene lowered the freezing point of benzene by 0.567 ^(@)C . The molecular mass of the substance is _____ (K_(f) = 5.12 K kg mol ^(-1))

6 g of a substance is dissolved in 100 g of water depresses the freezing point by 0.93^(@)C . The molecular mass of the substance will be: ( K_(f) for water = 1.86^(@)C /molal)

The freezing point of a solution of 2.40 g of biphenyl( C_(12)H_(10) ) in 75.0 g of benzene ( C_(6)H_(6) ) is 4.40^(@)C . The normal freezing point of benzene is 5.50^(@)C . What is the molal freezing point constant (^(@)C//m) for benzene ?

A2Z-SOLUTIONS-Depression Of Freezing Point
  1. Freezing point of an aqueous solution is -0.186^(@)C. Elevation of boi...

    Text Solution

    |

  2. Equimolar solutions of two non-electroytes in the same solvent have:

    Text Solution

    |

  3. What should be the freezing point of aqueous solution containing 17g o...

    Text Solution

    |

  4. Ethylene glycol is used as an antifreeze in a cold cliamate Mass of et...

    Text Solution

    |

  5. 0.48 g of a substance is dissolved in 10.6 g of C(6)H(6).The freezing...

    Text Solution

    |

  6. The freezing point of equimolal soution will be highest for :

    Text Solution

    |

  7. The freezing point of 0.2molal K(2)SO(4)is -1.1^(@)C. Calculate van't ...

    Text Solution

    |

  8. A certain substance A tetramerizes in water to the extent of 80%. A so...

    Text Solution

    |

  9. The freezing point of a solution containing 50 cm^(3) of ethylene glyc...

    Text Solution

    |

  10. Cryoscopic constant of a liquid

    Text Solution

    |

  11. Addition of 0.643g of compound to 50ml of benzene (density =0.879mol^(...

    Text Solution

    |

  12. Which of the following solution will have highest freezing point?

    Text Solution

    |

  13. 0.48of a substance is dissolved in 10.6g of C(6)H(6).The freezing poin...

    Text Solution

    |

  14. What is the freezing point of a solution containing 8.1g Br in 100g wa...

    Text Solution

    |

  15. The freezing point of one molal NaClsolution assuming NaClto be 100%di...

    Text Solution

    |

  16. Which of the following aqueous molal solution have highest freezing po...

    Text Solution

    |

  17. When a solution w g of urea in 1Kg of water is cooled to -0.372^(@)C,2...

    Text Solution

    |

  18. NaCl is added to1 litre water to such an extent that DeltaT(f)//K(f) b...

    Text Solution

    |

  19. Increasing amoutn of HgI(2)is added to 1 litre of an aqueous solution ...

    Text Solution

    |

  20. 3.24gHg(NO(3))(2)(molecules mass324)dissolved in 1000 g of water const...

    Text Solution

    |