Home
Class 12
CHEMISTRY
The vapour pressure of pure benzene ...

The vapour pressure of pure benzene at `25^(@)C` is 180 mm Hg. The vapour pressure lowering caused by the addition of 2.5 g of a solute ( Molar mass = 342 ) to 250 g of benzene is _____.

A

`1.4 mm Hg`

B

`2.6 mm Hg`

C

`4.1 mm Hg`

D

`3.2mm Hg`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • SOLUTIONS AND COLLIGATIVE PROPERTIES

    TARGET PUBLICATION|Exercise Competitive Thinking|81 Videos

  • SOLID STATE

    TARGET PUBLICATION|Exercise QUESTION|211 Videos

Similar Questions

Explore conceptually related problems

If the vapour pressure of pure water at 25^@C is 23.8 mmHg , then calculate the vapour pressure lowering caused by the addition of 100 g of sucrose (molecular mass = 342 g/mol) to 100 g of water

Calculate the vapour pressure lowering caused by the addition of 68.4 g of sucrose (molecular mass = 342) to 500 g of water if the vapour pressure of pure water at 25^(@)C is 20.0 mm Hg .

The vapour pressure of pure benzene at 25^@C is 640 mm Hg and that of the solute A in benzene is 630 mm of Hg. The molality of solution of

The vapour pressure of a pure liquid at 25^(@)C is 100 mm Hg. Calculate the relative lowering of vapour pressure if the mole fraction of solvent in solution is 0.8.

The vapour pressure of pure benzene at 25^@C is 640.0 mm Hg and vapour pressure of a solution of a solute in benzene is 25^@C is 632.0 mm Hg. Find the freezing point of the solution if k_f for benzene is 5.12 K/m. (T_("benzene")^@ = 5.5^@C)

Benzene and toluene from an ideal solution. The vapour pressure of benzene at 55^(@) C is 400 mm Hg while the vapour pressure of toluene at 55^(@)C is 130 mm Hg. What is the vapour pressure of a solution consisiting of 0.5 mole fraction of benzene and 0.5 mole fraction of toluene at 55^(@)C ?

TARGET PUBLICATION-SOLUTIONS AND COLLIGATIVE PROPERTIES-Evaluation Test
  1. IF 45 mL of 0.2 M solution A is mixed with 60mL of a 0.3 M solu...

    Text Solution

    |

  2. 1000g of aqueous solution of Na(2) CO(3) contains to g to sod...

    Text Solution

    |

  3. The vapour pressure of pure benzene at 25^(@)C is 180 mm Hg. The...

    Text Solution

    |

  4. A small amount of a non-volatile solute is dissilved in 64.5 cm^...

    Text Solution

    |

  5. The vapour pressure of a certain pure liquid A at 298 K is 40 mbar. Wh...

    Text Solution

    |

  6. A solution has 1:3 ratio of cyclopentane to cyclohexane . The va...

    Text Solution

    |

  7. 0.3 molal aqueous solution of sucrose boils at 100.51 ^(@) C . Th...

    Text Solution

    |

  8. A solution contains 0.524 g of camphor ( molar mass = 152 g/ mol...

    Text Solution

    |

  9. 0.1 M solution each of glucose, sodium chloride, sodium sulphate...

    Text Solution

    |

  10. The depession inn freezing point of a 5% aqueous solution of a s...

    Text Solution

    |

  11. The depression of freezing point of a solvent (b.p:303 K) for a ...

    Text Solution

    |

  12. Two elements A and B form compounds having molecular formula AB(2) and...

    Text Solution

    |

  13. A solution containing 3.56 g of a polymer in 1 litre of a solve...

    Text Solution

    |

  14. A solution of glucose containing 9.2 g/ litre (molecular weight ...

    Text Solution

    |

  15. IF 10 g of solute was dissolved in 250 mL. of water and osmoti...

    Text Solution

    |

  16. IF density of a solvent is greater than 1 kg dm^(-3) , then the ...

    Text Solution

    |

  17. The vapour pressure will be lowest for .

    Text Solution

    |

  18. At certain Hill-station pure water boils at 99.725^(@)C. If K(b) for w...

    Text Solution

    |

  19. A solution containing 500 g of a protein per litre is isotonic ...

    Text Solution

    |

  20. The osmotic pressure of a solution at 276 K is 2.5 atm . It...

    Text Solution

    |