Home
Class 12
CHEMISTRY
6 g of a substance is dissolved in 100 g...

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)

A

60 g/mole

B

180 g/mole

C

120 g/mole

D

240 g/mole

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • LIQUID SOLUTION

    VMC MODULES ENGLISH|Exercise EFFICIENT|98 Videos
  • LIQUID SOLUTION

    VMC MODULES ENGLISH|Exercise IMPECCABLE|100 Videos
  • LIQUID SOLUTION

    VMC MODULES ENGLISH|Exercise IMPECCABLE|100 Videos
  • JEE MAIN REVISON TEST-23

    VMC MODULES ENGLISH|Exercise CHEMISTRY (SECTION 1)|25 Videos
  • LIQUID SOLUTIONS

    VMC MODULES ENGLISH|Exercise IN-CHAPTER EXERCISE -L|10 Videos

Similar Questions

Explore conceptually related problems

By dissolving 13.6 g of a substance in 20 g of water, the freezing point decreased by 3.7^(@)C . Calculate the molecular mass of the substance. (Molal depression constant for water = 1.863K kg mol^(-1))

5 g of a substance when dissolved in 50 g water lowers the freezing by 1.2^(@)C . Calculate molecular wt. of the substance if molal depression constant of water is 1.86 K kg mol^-1 .

1.355 g of a substance dissolved in 55 g of CH_(3)COOH produced a depression in the freezing point of 0.618^(@)C . Calculate the molecular weight of the substance (K_(f)=3.85)

2.71 g of a substance dissolved in 55 g of CH2COOH produced a depression in the freezing point of 0.618 o C. Calculate the molecular weight of the substance. (Kf=3.85)

(a) Define the following terms : (i) Mole fraction (ii) Ideal solution (b) 15.0 g of an unknown molecular material is dissolved in 450g of water . The resulting solution freezes at -0.34^(@)C . What is the molar mass of the material ? (K_(f) for water = 1.86 K kg mol^(-1))

4.0g of substance A dissolved in 100g H_(2)O depressed the freezing point of water by 0.1^(@)C while 4.0g of another substance B depressed the freezing point by 0.2^(@)C . Which one has higher molecular mass and what is the relation ?

The vapour pressure of water at 20^(@)C is 17.54mm . When 20g of non - ionic substance is dissolved in 100g of water, the vapour pressure is lowered by 0.30mm . What is the molecular mass of the substance ?

A solution of sucrose (molar mass =342 g mol^(-1) ) has been prepared by dissolving 68.5 g of sucrose in 1000 g of water. The depression in freezing point of the solution obtained will be ( K_(f) for water = 1.86K kg mol^(-1) )

When 10.6 g of a non volatile substance is dissolved in 750 g of ether, its boiling point is raised 0.266^(@)C . The molecular weight of the substance is (Given : Molal boiling point constant for ether is 2.0^(@)Ckg//mol ) Report your answer by rounding it up to nearest whole number.

When 36.0 g of a solute having the empirical formula CH_(2)O is dissovled in 1.20 kg of water, the solution freezes at -0.93^(@)C . What is the moleculer formula of the solute ? ( K_(f) = 1.86^(@)C kg mol^(-1) )

VMC MODULES ENGLISH-LIQUID SOLUTION -ENABLE
  1. The molal freezing point constant of water is 1.86 K m^(-1). If 342 g...

    Text Solution

    |

  2. A 0.5 molal solution of ethylene glycol in water is used as coolant in...

    Text Solution

    |

  3. 6 g of a substance is dissolved in 100 g of water depresses the freezi...

    Text Solution

    |

  4. 0.1 mole of sugar is dissolved in 250 g of water. The freezing point o...

    Text Solution

    |

  5. The relationship between osmotic pressure (P) at 273 K when 10g glucos...

    Text Solution

    |

  6. An ideal solution was obtained by mixing methanol and ethanol. If the ...

    Text Solution

    |

  7. Glucose is added to 1 litre water to such an extent that (DeltaT(f))/(...

    Text Solution

    |

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

    Text Solution

    |

  9. The vapour pressure of a solvent decreased by 10 mm of Hg when a non-v...

    Text Solution

    |

  10. Elevation in boiling point was 0.52^(@)C when 6g of a compound x was d...

    Text Solution

    |

  11. If a 6.84% (weight//volume) solution of cane sugar (molecular weight=3...

    Text Solution

    |

  12. A solution containing 8.6 g urea in one litre was found to be isotonic...

    Text Solution

    |

  13. If 0.1 M solution of glucose and 0.1 M urea solution are placed on two...

    Text Solution

    |

  14. The molal freezing point constant of water is 1.86 K m^(-1). If 342 g...

    Text Solution

    |

  15. A 5.8% (mass/vol) NaCl solution will exert an osmotic pressure closest...

    Text Solution

    |

  16. Two solutions of KNO(3) and CH(3)COOH are prepared separately. The mol...

    Text Solution

    |

  17. Which compound corresponds vant Hoff factor (i) to be equal to 2 in di...

    Text Solution

    |

  18. The freezing point of 1 m NaCl solution assuming NaCl to be 100% disso...

    Text Solution

    |

  19. The molecular weight of benzoic acid in benzene as determined by depre...

    Text Solution

    |

  20. Depression in freezing point for 1M urea, 1M NaCl and 1M CaCl2 are in ...

    Text Solution

    |