Home
Class 11
CHEMISTRY
The relative lowering of vapour pressure...

The relative lowering of vapour pressure of a sugar solution in water is ` 3.5xx 10^(-3) ` The mole fraction of water in that solution is

A

`0.0035`

B

`0.35`

C

`0.0035//18`

D

`0.9965`

Text Solution

Verified by Experts

The correct Answer is:
D
`(Delta P )/(P ^(@))= x _("sugar")`
`3.5 xx 10 ^(-3) =x _("sugar")`
`x _("sugar") + x _(H _(2)O)=1`
`x _(H_(2)O)=1 -0.0035 = 0.9965`
Promotional Banner

Topper's Solved these Questions

  • SOLUTIONS

    FULL MARKS|Exercise TEXTUAL EVALUATION SOVED - SHORT ANSWER TYPE QUESTION|7 Videos

  • SOLUTIONS

    FULL MARKS|Exercise TEXTUAL EVALUATION SOVED - LONG ANSWER QUESTIONS|10 Videos

  • SOLUTIONS

    FULL MARKS|Exercise ADDITIONAL QUESTIONS SOLVED - NUMERICAL PROBLEMS|15 Videos

  • SAMPLE PAPER-8

    FULL MARKS|Exercise Part-IV|10 Videos

  • SOLVED PAPER 03

    FULL MARKS|Exercise PART-IV|10 Videos

Similar Questions

Explore conceptually related problems

Define relative lowering of vapour pressure.

Relative lowering of vapour pressure is equal to __________in solution.

The Henry's law constant for the solubility of Nitrogen gas in water at 350 K is 8xx 10^(4) atm. The mole fraction of nitrogen in air is 0.5 .The number of moles of Nitrogen from air dissolved in 10 moles of water at 350 K and 4 atm pressure is

FULL MARKS-SOLUTIONS -TEXTUAL EVALUATION SOVED -MULTIPLE CHOICE QUESTIONS
  1. The Henry's law constant for two gases A and B are x and y respectivel...

    Text Solution

    |

  2. At 100 ^(@) C the vapour pressure of a solution containing 6.5 g a sol...

    Text Solution

    |

  3. According to Raoults law, the relative lowering of vapour pressure for...

    Text Solution

    |

  4. At same temperature , which pair of the following solutions are Isoton...

    Text Solution

    |

  5. The empirical formula of a non-electrolyte (X) is CH (2) O. A solution...

    Text Solution

    |

  6. The KH for the solution of oxygen dissolved in water is 4xx 10^(4) a...

    Text Solution

    |

  7. Normality of 1.25 M sulphuric acid is

    Text Solution

    |

  8. Two liquids X and Y on mixing gives a warm solution. The solution is

    Text Solution

    |

  9. The relative lowering of vapour pressure of a sugar solution in water ...

    Text Solution

    |

  10. The mass of a non-volatile solute (molar mass 80 g mol^(-1) ) which sh...

    Text Solution

    |

  11. For a solution the plot of osmotic pressure (pi ) verses the concent...

    Text Solution

    |

  12. 200 ml of an aqueous solution of a protein contains 1.26 g of protein....

    Text Solution

    |

  13. The Van't Hoff factor (i) for a dilute aqueous solution of the strong ...

    Text Solution

    |

  14. What is the molality of a 10% W/W aqueous sodium hydroxide solution?

    Text Solution

    |

  15. The correct equation for the degree of an associating solute, 'n' mole...

    Text Solution

    |

  16. which of the following aqueous solution has the highest bolling point?

    Text Solution

    |

  17. The freezing point depression constant for water is 1. 86^(@)K gm mol ...

    Text Solution

    |

  18. Equimolar aqueous solutions of NaCl and KCl are prepared. If the freez...

    Text Solution

    |

  19. Phenol dismerises in benzene having Van,t Hoff factor 0.54 What is the...

    Text Solution

    |

  20. Assertion : An ideal solution obeys Raoults Law Reason: In an ideal ...

    Text Solution

    |