Home
Class 12
CHEMISTRY
Which of the following statements about ...

Which of the following statements about the composition of the vapour over an ideal 1:1 molar mixture of benzene and toluene is correct ? Assume that that the temperature is constant at `25^@C`. (Given, Vapour pressure Data at `25^@C`, benzene = 12.8 KPa, toluene = 3.85 KPa)

A

The vapour will contain equal amounts of benzene and toluene.

B

Not enough information is given to make a prediction.

C

The vapour will contain a higher percentage of benzene.

D

The vapour will contain a higher percentage of toluene.

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

Estimate the total number of air molecules (inclusive of O_2,N_2 and water vapour and other constituents) in a room of capacity 25 m^3 at a temperature of 27^@C and 1 atm pressure.

At 40^@C , the vapour pressure of pure liquids, benzene and toluene, are 160 mm Hg and 60 mm Hg respectively. At the same temperature, the vapour pressure of an equimolar solution of the two liquids, assuming the ideal solution should be

At 25^@C at constant volume 7:8 gm benzene produce 326.4 kJ heat on complete combustion, calculate the amount of heat evolved at constant 1 atm pressure and at the temperature on complete combustion of same amount of benzene :

Calculate heat of combustion of benzene at constant pressure at 27^@C . (R=8.3 J mol^-1 K^-1)

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 ?

From the following data at constant volume for combustion of benzene, calculate the heat of this reaction at constant pressure condition. C_(6)H_(6(1))+71//2O_(2(g))rarr 6CO_(2(g))+13H_(2)O_((l))

At 25^(@)C , heat evolved due to complete combustion of 7.8 g of C_(6)H_(6)(l) is 326.4 kJ. Calculate the heat evolved due to complete combustion of the same amount of C_(6)H_(6)(l) at the same temperature and constant pressure of 1 atm.

PATHFINDER-SOLUTIONS-QUESTION BANK
  1. The van't Hoff factor (i) for a dilute aqueous solution of the strong ...

    Text Solution

    |

  2. Which one of the following is incorrect for ideal solution ?

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  10. 25 cm^3 of oxalic acid completely neutralised 0. 064g of sodium hydrox...

    Text Solution

    |

  11. 5.5 mg of nitrogen gas dissolves in 180 g of water at 273K and 1 atm p...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |