Home
Class 12
CHEMISTRY
At 100^@C the vapour pressure of a solut...

At `100^@C` the vapour pressure of a solution of 6.5 g of a solute in 100 g water is 732 mm. If `K_b` = 0. 52, the boiling point of this solution will be.

A

`102^@C`

B

`103^@C`

C

`101^@C`

D

`100^@C`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • SOLUTIONS

    PATHFINDER|Exercise QUESTION BANK|250 Videos
  • SOLUTION

    PATHFINDER|Exercise QUESTION BANK|28 Videos
  • SURFACE CHEMISTRY

    PATHFINDER|Exercise QUESTION BANK|41 Videos

Similar Questions

Explore conceptually related problems

At 100^(@)C the vapour pressure of a solution of 6.5 g of a solute in 100 g water is 732 mm. If k_(b) = 0.5 , the boiling point of this solution will be -

Why is the vapour pressure of an aqueous solution of glucose lower that that of water?

A solution contains 5.6 gm of glucose in 1000 gm of water. Calculate the boiling point of the solution. ( k_b for water = 0.52 K kg mol^-1 )

The vapour pressure of an aqueous solution of sucrose at 373 K is found to be 750 mm Hg. The molality of the solution at the same temperature will be :

Show graphically how the vapour pressures of a solvent and a solution of a non-volatile solute in it change with temperature. Show on the graph boiling point of the solvent and the solution. Which is higher and why?

A very small amount of a nonvolatile solute (that does not dissociate) is dissolved in 56.8 cm^3 of benzene (density 0.889 g cm^-3 ). At room temperature, vapour pressure of this solution is 98.88 mm Hg while that of benzene is 100 mm Hg. Find the molality of this solution. If the freezing temperature of this solution is 0.73 degree lower than that of benzene, what is the value of molar freezing point depression constant of benzene ?

The relative lowering of vapour pressure of an aqueous solution containing a non-volatile solute is 0.0125. The molality of the solution is

20 g of a solid solute is dissolved in 180 g of water. At 100^(@)C the vapour pressure of the solution becomes 740 mmHg. Calculate relative molecular mass of the solute. (No association/dissociation of the solute takes place )

Two liquids A and B form an ideal solution. At 300 k, the vapour pressure of a solution containing 1 mole of A and 3 moles of B is 550 mm of Hg. At the same temperature, if one mole of B is added to this solution, the vapour pressure of the solution increases by 10 mm of Hg. Determine the vapour pressure of A and B in their pure states.

Calculate the vapour pressure of the solution. The molefraction of the solute is 0.25. The vapour pressure of the pure solvent is 0.8atm.

PATHFINDER-SOLUTIONS-QUESTION BANK
  1. Which one of the following is incorrect for ideal solution ?

    Text Solution

    |

  2. Which of the following statements about the composition of the vapour ...

    Text Solution

    |

  3. At 100^@C the vapour pressure of a solution of 6.5 g of a solute in 10...

    Text Solution

    |

  4. Consider the following liquid - vapour equilibrium Liquid iff Vapour ...

    Text Solution

    |

  5. If P^0 and P are the vapour pressure of the pure solvent and solution ...

    Text Solution

    |

  6. The vapour pressure of acetone at 20^@C is 185 torr. When 1.2 g of a n...

    Text Solution

    |

  7. Of the following 0. 10 m aqueous solutions, which one will exhibit the...

    Text Solution

    |

  8. A solution of 1.25 g of 'P' in 50g of water lowers freezing point by 0...

    Text Solution

    |

  9. 25 cm^3 of oxalic acid completely neutralised 0. 064g of sodium hydrox...

    Text Solution

    |

  10. 5.5 mg of nitrogen gas dissolves in 180 g of water at 273K and 1 atm p...

    Text Solution

    |

  11. What will be the value of molality for an aqueous solution of 10% w/w ...

    Text Solution

    |

  12. If 10ml of 0. 1M aqueous solution of NaCI is divided into 1000 drops o...

    Text Solution

    |

  13. What is the molality of a solution containing 200 mg of urea (molar ma...

    Text Solution

    |

  14. The molarity of a solution obtained by mixing 750 mL of 0.5(M) HCI wit...

    Text Solution

    |

  15. Identify the mixture that shows positive deviation from Raoult's law.

    Text Solution

    |

  16. The temperature at which the vapour pressure of a liquid becomes equal...

    Text Solution

    |

  17. An aqueous solution freezes at - 0. 186^@C then elevation in boiling p...

    Text Solution

    |

  18. Which one of the following solutions exhibits the maximum elevation in...

    Text Solution

    |

  19. Which colligative property is most suitable for the determination of m...

    Text Solution

    |

  20. Which one of the statements given below concerning properties of solut...

    Text Solution

    |