Home
Class 12
CHEMISTRY
What weight of the non-volatile solute u...

What weight of the non-volatile solute urea' `(NH_(2)-CO-NH_(2))` needs to be dissolved in `100 g` of water in order to decrease the vapour pressure of water by `25%`? What will be the molality of the solution?

A

18.52 m

B

62.45 m

C

28.52 m

D

35.64 m

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • NTA NEET TEST 25

    NTA MOCK TESTS|Exercise CHEMISTRY|45 Videos

  • NTA NEET TEST 79

    NTA MOCK TESTS|Exercise CHEMISTRY|45 Videos

Similar Questions

Explore conceptually related problems

What weight of non - volatile solute,urea (NH_(2)CONH_(2)) needs to be dissolved in 100g of water, in order to decrease the vapour pressure of water by 25% .

What weight of the non-volatile urea ( NH_2- CO - NH_2 ) needs to be dissolved in 100g of water in order to decrease the vapour pressure of water by 25%? What will be molality of the solution?

What weight of the non -volatile solute, urea needs to be dissolved in 100g of water, in order to decrease the vapour pressure of water by 25%? What will be the molality of the solution?

What mass of non-volatile solute (urea) needs to be dissolved in 100 g of water in order to decrease the vapour pressure of water by 30% . What will be the molality of solution?

What mass of urea be dissolved in 171 g of water so as to decrease the vapour pressure of water by 5% ?

7.45g of potassium chloride is dissolved in 100g of water. What will be the molality of the solution ?

How mich urea ("molar mass"=60 g mol^(-1)) must be dissolved in 50 g of water so that the vapour pressure at room temperature is reduced by 25% ? Also calculate the molality of the solution obtained.

Knowledge Check

  • What weight of non - volatile solute,urea (NH_(2)CONH_(2)) needs to be dissolved in 100g of water, in order to decrease the vapour pressure of water by 25% .

    A
    `11.1gm`
    B
    `111.1gm`
    C
    `9.82gm`
    D
    `982 gm`

  • What mass of urea be dissolved in 171 g of water so as to decrease the vapour pressure of water by 5% ?

    A
    `15 g`
    B
    `20 g`
    C
    `25 g`
    D
    `30 g`
    • NTA MOCK TESTS-NTA NEET TEST 64-CHEMISTRY
    1. What weight of the non-volatile solute urea' (NH(2)-CO-NH(2)) needs to...

      Text Solution

      |

    2. Alkyl cyanides undergo Stephen redyction to produce

      Text Solution

      |

    3. The reaction of whitc phosphorus with aqueous NaOH gives phosphine alo...

      Text Solution

      |

    4. Concentrated nitric acid used for laboratory works is 68% nitric acid ...

      Text Solution

      |

    5. Ziegler -Natta catalyst is an organometallic compound of which metal

      Text Solution

      |

    6. The geometrical arrangement and shape of I3^- are respectively

      Text Solution

      |

    7. Heat evolved during chemisorption lies in the range of

      Text Solution

      |

    8. Alkyl halides react with dialkyl copper reagents to give

      Text Solution

      |

    9. The reaction of , water gas (CO+H2)+H2 at 673 K, 300 atmosphere in pre...

      Text Solution

      |

    10. An ideal gas undergoes isothermal expansion at constant pressure . Dur...

      Text Solution

      |

    11. 2-Methylbutan -2-ol can be obtained by the acid catalyzed hydration of

      Text Solution

      |

    12. An organic compound with C =40 % and H= 6.7% will have the empirical f...

      Text Solution

      |

    13. Select correct statement :

      Text Solution

      |

    14. Pb(CH3COO)2 gives …….colour with H2S

      Text Solution

      |

    15. Mixture of two liquids A and B is placed in cylinder containing piston...

      Text Solution

      |

    16. A hydrogen atom is paramagnetic . A hydrogen molecule is

      Text Solution

      |

    17. HA is a weak acid and BOH is a weak base. For which of the following s...

      Text Solution

      |

    18. 116 mg of a compound on vaporisation in a Victor - Meyer's apparatus d...

      Text Solution

      |

    19. Which intermolecular force is most responsible in allowing xenon gas t...

      Text Solution

      |

    20. Ph-CH2-CH=CH2overset(dil. H2SO4)rarrA,A is

      Text Solution

      |