Home
Class 12
CHEMISTRY
Molal depression constant for a solvent ...

Molal depression constant for a solvent is `4.0 kg mol^(-1)`. The depression in the freezing point of the solvent for `0.03 mol kg^(-1)` solution of `K_(2)SO_(4)` is : (Assume complete dissociation of the electrolyte)

A

0.18 K

B

0.24 K

C

0.36 K

D

0.12 K

Text Solution

Verified by Experts

`K_(2)SO_(4)=2K^(+)+SO_(4)^(2-)`
`i=3`
`AT_(f)=ixxK_(f)xxm=3xx4xx0.03=0.36K`
Promotional Banner

Topper's Solved these Questions

  • THEORY OF SOLUTIONS

    VMC MODULES ENGLISH|Exercise JEE Advanced (Archive)|31 Videos

  • THEORY OF SOLUTIONS

    VMC MODULES ENGLISH|Exercise LEVEL 2|65 Videos

  • THE SOLID STATE

    VMC MODULES ENGLISH|Exercise EXERCISE-J|10 Videos

  • THERMOCHEMISTRY

    VMC MODULES ENGLISH|Exercise JEE ADVANCED (ARCHIVE)|31 Videos

Similar Questions

Explore conceptually related problems

Molal depression constant for a solvent is 4.0 K kg mol^(-1) . The depression in the freezing point of the solvent for 0.5 mol kg^(-1) solution of KI (Assume complete dissociation of the electrolyte) is _______ .

The molal depression constant for water is 1.86^(@)C . The freezing point of a 0.05-molal solution of a non-electrolyte in water is

The ratio of freezing point depression values of 0.01 M solutions of urea, common salt, and Na_(2)SO_(4) are

Calculate depression of freezing point for 0.56 molal aq. Solution of KCl. (Given : K_f(H_(2)O) = 1.8 kg mol^(-1) ).

Elevation in the boiling point for 1 molal solution of glucose is 2K. The depression in the freezing point for 2 molal solution of glucose in the same solvent is 2K. The relation between K_(b) and K_(f) is

The freezing point of a 0.08 molal solution of NaHSO^(4) is -0.372^(@)C . Calculate the dissociation constant for the reaction. K_(f) for water = 1.86 K m^(-1)

0.5 molal aqueous solution of a weak acid (HX) is 20% ionised. If K_(f) for water is 1.86K kg mol^(-1) , the lowering in freezing point of the solution is

The freezing point depression constant of benzene is 5.12 K kg mol^(-1) . The freezing point depression for the solution of molality 0.078m containing a non-electrolyte solute in benzene is

If the elevation in boiling point of a solution of non-volatile, non-electrolytic and non-associating solute in solvent ( K_(b) =xK.kg"mol"^(-1) ) is yK,then the depression in freezing point of solution of same concentration would be ( K_(f) )of the solvent = zK.kg"mol"^(-1) )

Calculate the Delta T_f (depression in freezing point) of 0.4 m solution of CH_3 COOH in benzene solution. K_f = x K kg mol^-1 .

VMC MODULES ENGLISH-THEORY OF SOLUTIONS-JEE Main (Archive)
  1. A solution containing 62 g ethylene glycol in 250 g water is cooled to...

    Text Solution

    |

  2. Elevation in the boiling point for 1 molal solution of glucose is 2K. ...

    Text Solution

    |

  3. The freezing point of a diluted milk sample is found to be-0.2^(@)C, w...

    Text Solution

    |

  4. Freezing point of a 4% aqueous solution of X is equal to freezing ...

    Text Solution

    |

  5. Molecules of benzoic acid (C(6)H(5)COOH) dimerise in benzene. ‘w’ g ...

    Text Solution

    |

  6. Liquids A and B form an ideal solution in the entire composition range...

    Text Solution

    |

  7. K(2)HgI(4) is 40% ionised in aqueous solution. The value of its van'...

    Text Solution

    |

  8. At room temperature, a dilute solution of urea is prepared by dissolvi...

    Text Solution

    |

  9. The osmotic pressure of a dilute solution of a compound XY in water is...

    Text Solution

    |

  10. Liquid 'M' and liquid 'N' form an ideal solution. The vapour pressures...

    Text Solution

    |

  11. The vapour pressures of pure liquids A and B are 400 and 600 mm Hg res...

    Text Solution

    |

  12. A solution is prepared by dissolving 0.6 g of urea (molar mass =60 g"m...

    Text Solution

    |

  13. 1g of a non-volatile non-electrolyte solute is dissolved in 100g of tw...

    Text Solution

    |

  14. Molal depression constant for a solvent is 4.0 kg mol^(-1). The depres...

    Text Solution

    |

  15. For the solution of the gases W, X, Y and Z in water at 298...

    Text Solution

    |

  16. Two open beakers one containing a solvent and the other containing a m...

    Text Solution

    |

  17. A cylinder containing an ideal gas (0.1 mol of 1.0 dm^(3) ) is in the...

    Text Solution

    |

  18. How much amount of NaCl should be added to 600 g fo water (varphi =1.0...

    Text Solution

    |

  19. A graph of vapour pressure and temperature for three different liquids...

    Text Solution

    |

  20. At 35^(@)C, the vapour pressure of is and that of acetone is . A s...

    Text Solution

    |