Home
Class 12
CHEMISTRY
Given at 350 K, P(A)^(@) = 300 torr and ...

Given at 350 K, `P_(A)^(@)` = 300 torr and `P_(B)^(@)`=800 torr the composition of the mixture having a normal boiling point of 350 K is :

A

`x_(A) = 0.08`

B

`x_(A) = 0.06`

C

`x_(A)=0.04`

D

`x_(A) =0.02`

Text Solution

Verified by Experts

The correct Answer is:
A

`760 = 300 x_(A) + 800 (1-x_(A))`
`rArr 760 = 800 - 500 x_(A)`
`rArr 500 x_(A) = 40 `
` :. x_(A) = 40/500 = 0.08`
Promotional Banner

Topper's Solved these Questions

  • SOLUTIONS

    PHYSICS WALLAH|Exercise NEET PAST 5 YEARS QUESTIONS |7 Videos
  • SOLUTIONS

    PHYSICS WALLAH|Exercise NEET PAST 5 YEARS QUESTIONS |7 Videos
  • REDOX REACTIONS

    PHYSICS WALLAH|Exercise LEVEL-1|40 Videos
  • STATES OF MATTER

    PHYSICS WALLAH|Exercise NEET PAST 5 YEARS QUESTIONS |14 Videos

Similar Questions

Explore conceptually related problems

Given at 350Kp_(A)^@=300 "torr" and p_(B)^@=800 "torr" the composition of the mixture having a normal boiling point of 350K is

For a mixture of two volatile , completely miscible liquids A and B , with P_(A)^(@)=500 " torr and " P_(B)^(@)=800 torr , what is the composition of last droplet of liquid remaining in equilibrium with vapour ? Provided the initial ideal solution has a composition of x_(A) = 0.6 and x_(B)=0.4

1 mole of liquid A and 9 moles of liquid B are mixed to form a solution. If "P"_("B")^(@)=400"mm" of Hg and "P"_("A")^(@)=20 "mm" of Hg at a temperature 'T' and normal boiling point of liquid B is 300K then answer the questions that follow. Given data: "K"_("b")=2.7"K kg mol"^(-1), Molar mass of B=100 It is observed that pressure of vapour above the solution at 'T' Kelvin is 350 mm Hg. The true statement is :

1 mole of liquid A and 9 moles of liquid B are mixed to form a solution. If "P"_("B")^(@)=400"mm" of Hg and "P"_("A")^(@)=20 "mm" of Hg at a temperature 'T' and normal boiling point of liquid B is 300K then answer the questions that follow. Given data: "K"_("b")=2.7"K kg mol"^(-1), Molar mass of B=100 If 'A' is assumed to be perfectly non volatile then what will be normal boiling point of the solution.

If two liquids A(P_(A)^(@)=100 torr) and B(P_(B)^(@)=200 torr) are completely immiscible with each other, each one will behave independently of the other, are present in a closed vessel. The total vapour pressure of the system will be:

The vapour pressure of two pure liquids, A and B that form an ideal solution are 300 and 800 torr respectively, at temperature T. A mixture of the vapour of A and B for which the mole fraction of A is 0.25 is slowly compressed at temperature T, Calculate (a) the composition of the first drop of the condesate, (b) the total pressure when this drop is formed, (c) the composition of the solution whose normal boiling point is T, (d) the pressure when only the last bubble of vapour remains, and (e) the composition of the last bubble.

If two liquids A ( P_A^(@) =100 torr) and ( P_B^(@) =200 torr ) which are completely immiscible with each other (each one will behave indepenently of the othere)are present in a closed vessel, the total vapour pressure of the system will be :

What is the mole ration of benzene (P_(B)^(@) =150 torr) and toluene (P_(T)^(@) =50 torr) in vapour phase if the given solution has a vapour pressure of 120 torr?

PHYSICS WALLAH-SOLUTIONS-LEVEL-2
  1. The relationship between osmotic pressure at 273 K when 10 g glucose (...

    Text Solution

    |

  2. Which of the following will form an ideal solution ?

    Text Solution

    |

  3. Which of the following shows negative deviation from Raoult's law?

    Text Solution

    |

  4. Mole fraction of C(3)H(5)(OH)(3) in a solution of 36 g of water and 46...

    Text Solution

    |

  5. The vapour pressure of water depends upon :

    Text Solution

    |

  6. Pressure cooker reduces cooking time because :

    Text Solution

    |

  7. 1mol each of the following solutes are taken in 5mol water, (a)NaCl (...

    Text Solution

    |

  8. Assuming 100 % ionisation of the electrolyte , released decrease in va...

    Text Solution

    |

  9. A solution of x moles of sucrose in 100grams of water freeze at -0.2^(...

    Text Solution

    |

  10. Mixture of voltaile omponents A and B has total vapoure pressure (in ...

    Text Solution

    |

  11. The vapour pressure of pure liquid solvent A is 0.80atm.When a non vol...

    Text Solution

    |

  12. Which of the following is not correct for an ideal solution ?

    Text Solution

    |

  13. Osmotic pressure of blood is 7.40 atm at 27^(@)C. Number of mol of glu...

    Text Solution

    |

  14. Given at 350 K, P(A)^(@) = 300 torr and P(B)^(@)=800 torr the composit...

    Text Solution

    |

  15. The molarity of 98 % H(2)SO(4) (d = 1.8 "g/ml") by wt . is :

    Text Solution

    |

  16. A solution of glucose (C(6)H(12)O(6))is isotonic with 4g of urea (NH(2...

    Text Solution

    |

  17. Which of the following is less than zero for ideal solutions ?

    Text Solution

    |

  18. The freezing point depression constant for water is 1.86^(@)K Kgmol^(-...

    Text Solution

    |

  19. Which of the following gas mixture is used by the divers inside the se...

    Text Solution

    |

  20. 200 mL of an aqueous solution of a protein contains its 1.26g. The osm...

    Text Solution

    |