Home
Class 12
CHEMISTRY
Assertion: Elevation in boiling point is...

Assertion: Elevation in boiling point is inversely proportional to lowering of vapour pressure for dilute solutions.
Reason: Lowering of vapour pressure is directly proportional to mole fraction of solvent.

A

Both Assertion and Reason are true and Reason is the correct explanation of Assertion

B

Both Assertion and Reason are true and Reason is not the correct explanation of Assertion

C

Assertion is true but Reason is false

D

Both Assertion and Reason are false

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • SOLUTIONS

    AAKASH SERIES|Exercise Objective Exercise -3 (PREVIOUS NEEET/AIPMT )|24 Videos

  • SOLIDS STATE

    AAKASH SERIES|Exercise PRACTICE EXERCISE|63 Videos

  • STATES OF MATTER

    AAKASH SERIES|Exercise ADDITIONAL PRACTICE EXERCISE -PRACTICE SHEET (ADVANCED) (LINKED COMPREHENSION TYPE QUESTIONS) (PASSAGE- IV)|2 Videos

Similar Questions

Explore conceptually related problems

What is relative lowering of vapour pressure ?

What is relative lowering of vapour pressure ?

The relative lowering of vapour pressure is equal to

Relative lowering of vapour pressure is maximum for

Which has greater lowering of vapour pressure

Assertion : Vapour pressure of 0.5M sugar solution is more than 0.5M KCl solution Reason: Lowering of vapour pressure is directly proportional to the number of particles present in the solution

At a given temperature (a) Vapour pressure of a solution containing nonvolatile solute is proportional to mole fraction of solvent (b) Lowering of vapour pressure of solution containing nonvolatile solute is proportional to mole fraction of solute (c) Relative lowering of vapour pressure is equal to mole fraction of solute

When some amount of non-volatile solute is dissolved in a solvent to prepare a dilute solution, the vapour pressure of the solvent is lowered and it is directly proportional to the mole fraction of solvent in the solution . Relative lowering in vapour pressure is equal to mole fraction of solute . Elevation in boiling point of solvent is a collgative property like lowering in vaour pressure of solvent in solution , K_(b) i.e., molal elevation constant is calculated by the formula, K_(b)=DeltaT_(b)// molality and also by the expression, K_(b)=RT_(b)^(2)//1000l_(v) where T_(b) is boiling point of solvent and I_(v) is latent heat of vapourisation for 1 gm solvent . Abnormal elevation is boiling point =iX elevation in boiling point in ideal solution where i=van't Hoff factor Lowering in vapour pressure in an experiment was found to be x mm of Hg. It is : Lowering in vapour pressure in an experiment was found to be x mm of Hg. It is

When some amount of non-volatile solute is dissolved in a solvent to prepare a dilute solution, the vapour pressure of the solvent is lowered and it is directly proportional to the mole fraction of solvent in the solution . Relative lowering in vapour pressure is equal to mole fraction of solute . Elevation in boiling point of solvent is a collgative property like lowering in vaour pressure of solvent in solution , K_(b) i.e., molal elevation constant is calculated by the formula, K_(b)=DeltaT_(b)// molality and also by the expression, K_(b)=RT_(b)^(2)//1000l_(v) where T_(b) is boiling point of solvent and I_(v) is latent heat of vapourisation for 1 gm solvent . Abnormal elevation is boiling point =iX elevation in boiling point in ideal solution where i=van't Hoff factor Relative lowering in vapour pressure :

When some amount of non-volatile solute is dissolved in a solvent to prepare a dilute solution, the vapour pressure of the solvent is lowered and it is directly proportional to the mole fraction of solvent in the solution . Relative lowering in vapour pressure is equal to mole fraction of solute . Elevation in boiling point of solvent is a collgative property like lowering in vaour pressure of solvent in solution , K_(b) i.e., molal elevation constant is calculated by the formula, K_(b)=DeltaT_(b)// molality and also by the expression, K_(b)=RT_(b)^(2)//1000l_(v) where T_(b) is boiling point of solvent and I_(v) is latent heat of vapourisation for 1 gm solvent . Abnormal elevation is boiling point =iX elevation in boiling point in ideal solution where i=van't Hoff factor Molal elevation (K_(b))

AAKASH SERIES-SOLUTIONS -Objective Exercise -4
  1. Assertion: If two liquids on mixing form a solution with liberation of...

    Text Solution

    |

  2. Assertion:When methanol is added to water boiling point of water decre...

    Text Solution

    |

  3. Assertion:Camphor is used as solvent in the experi mental determinatio...

    Text Solution

    |

  4. Assertion:Addition of salt decreases the freezing point of water. R...

    Text Solution

    |

  5. Assertion:Ethylene glycol is added to water and used as antifreeze in ...

    Text Solution

    |

  6. Assertion:Osmotic pressure of 0.1M glucose is less than 0.1M MgCl2 sol...

    Text Solution

    |

  7. Assertion:Ideal solutions follow Raoult's law. Reason: DeltaH and D...

    Text Solution

    |

  8. Assertion:Van't Hoff factor for electrolytes is always greater than un...

    Text Solution

    |

  9. Assertion:Aqueous solution of urea is ideal. Reason: Ideal solutions...

    Text Solution

    |

  10. Assertion:Ether has higher vapour pressure than water at a given tempe...

    Text Solution

    |

  11. Assertion: When NaCl is added to water a depression in freezing point ...

    Text Solution

    |

  12. Assertion:When CuSO4 is dissolved in water, the solution is warmed up....

    Text Solution

    |

  13. Assertion:The sum of mole fractions of all components of a solution is...

    Text Solution

    |

  14. Assertion: Benzene and toluene form an ideal solution. Reason: Succe...

    Text Solution

    |

  15. Assertion: Elevation in boiling point is inversely proportional to low...

    Text Solution

    |

  16. Assertion:When a solution of non-volatile solute in water is cooled sl...

    Text Solution

    |

  17. Assertion:When dry air is passed continuously through an aqueous solut...

    Text Solution

    |

  18. Assertion: van't Hoff factor of NaCl is expected to be equal to 3 Re...

    Text Solution

    |

  19. Assertion: 0.1M glucose, 0.1M urea solutions cause the same osmotic pr...

    Text Solution

    |

  20. Assertion: The vapour pressure of mixture of ethanol and water is grea...

    Text Solution

    |