Home
Class 12
CHEMISTRY
The vapour pressure of a solution of a n...

The vapour pressure of a solution of a non-volatile electrolyte B in a solvent A is 95% of the vapour pressure of the solvent at the same temperature. IF the molecular weight of the solvent is 0.3 times the molecular weight of solute, then the weight ratio of the solvent and solute is :

Text Solution

Verified by Experts

From Raoult's law
`(P_(0)-P)/(P_(0))=(W_(B)xxM_(A))/(W_(A)xxM_(B))`
or `1/20=(0.3xxW_(B))/(W_(A))`
`:.(W_(A))/(W_(B))=0.3xx20=6.0`
Promotional Banner

Topper's Solved these Questions

  • THEORY OF SOLUTIONS

    VMC MODULES ENGLISH|Exercise JEE Main (Archive)|57 Videos

  • THEORY OF SOLUTIONS

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

  • THEORY OF SOLUTIONS

    VMC MODULES ENGLISH|Exercise LEVEL 1|75 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

The vapour pressure of a solution of a non-volatile electrolyte B in a solvent A is 95% of the vapour pressure of the solvent at the same temperature. If the molecular weight of the solvent is 0.3 times, the molecular weight of solute, the weight ratio of the solvent and solute are:

Vapour pressure of a solvent containing nonvolatile solute is:

The vapour pressure of a solution having solid as solute and liquid as solvent is:

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

The vapour pressure (VP) of a dilute solution of non-volatile solute is P and the VP of a pure solvent is P^(@) . The lowering of the VP is

Vapour pressure of a solution of 5g of non-electrolyte in 100g water at a particular temperature is 2985N//m^(2) .The vapour pressure of pure water is 3000N//m^(2) .The molecular weight of the solute is

The vapour pressure at a given temperature of an ideal solution containing 0.2 mol of non-volatile solute and 0.8 mol of a solvent is 60 mm of Hg . The vapour pressure of the pure solvent at the same temperature will be

Vapour pressure of benzene at 30^(@)C is 121.8 mm. When 15 g of a non-volatile solute is dissolved in 250 g of benzene its vapour pressure decreased to 120.2 mm. The molecular weight of the solute is (mol. Weight of solvent = 78)

Relative lowering of vapour pressure of a solution containing a non volatile solute (X) in a solvent (Y) is 3%. What is the mole percentage of component 'Y' in the solution.

Find the molality of a solution containing a non-volatile solute if the vapour pressure is 2% below the vapour pressure or pure water.

VMC MODULES ENGLISH-THEORY OF SOLUTIONS-LEVEL 2
  1. Two equimolar solutions have osmotic pressures in the ratio of 2 : 1 a...

    Text Solution

    |

  2. Human blood gives rise to an osmotic pressure of approximately 7.65 at...

    Text Solution

    |

  3. Osmotic pressure of insulin solution at 298 K is found to be 0.0072atm...

    Text Solution

    |

  4. Out of the compounds below, the vapour pressure of (B) at a particular...

    Text Solution

    |

  5. How much urea must be dissolved in 10^(-2)m^(3) water to yield a press...

    Text Solution

    |

  6. Acetic acid exists in benzene solution in the dimeric form. In an actu...

    Text Solution

    |

  7. Calculate the mass of a non-volatile solute (molar mass 40 g mol^(-1))...

    Text Solution

    |

  8. 1000gm of sucrose solution in water is cooled to -0.5^(@)C. How much ...

    Text Solution

    |

  9. The depression in freezing point of 0.01 m aqueous CH(3)CooH solution ...

    Text Solution

    |

  10. When 20 g of naphthoic acid (C(11)H(8)O(2)) is dissolved in 50 g of be...

    Text Solution

    |

  11. 75.2 g of phenol is dissolved in a solvent of Kf=14. If the depression...

    Text Solution

    |

  12. A storage battery contains a solution of H(2)SO(4) 38% by weight. At t...

    Text Solution

    |

  13. Calculate the apparent degree of ionisation of an electrolyte MX(2) i...

    Text Solution

    |

  14. The vapour pressure of a solution of a non-volatile electrolyte B in a...

    Text Solution

    |

  15. The relative lowering of the vapour pressure of an aqueous solution co...

    Text Solution

    |

  16. A 5 per cent aqueous solution by mass of a non-volatile solute boils a...

    Text Solution

    |

  17. One gram of serum albumin dissolved in 1000cm^(3) of water gives a sol...

    Text Solution

    |

  18. Density of a 2.05 M solution of acetic acid in water is 1.02 g/mL. The...

    Text Solution

    |

  19. The freezing point of 0.08 molal NaHSO(4) is -0.345^(@)C. Calculate th...

    Text Solution

    |

  20. Freezing point of 0.2 M KCN solution is -0.7^(@)C. On adding 0.1 mole ...

    Text Solution

    |