Home
Class 12
CHEMISTRY
Mole fraction (x ) of a component i...

Mole fraction (x ) of a component is equal to _____.

A

`("number of moles of solute ")/(" number of litres of solution ")`

B

`("number of grem - equivents of solute ")/(" number of littres of solutons ")`

C

`("number of moles of solute ")/(" number of kilograms of solvent ")`

D

`("number of moles of a component ")/("total number of moles of all components ")`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • SOLUTIONS AND COLLIGATIVE PROPERTIES

    TARGET PUBLICATION|Exercise Critical Thinking|91 Videos
  • 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

Assertion: The weight percentage of a compound A in a solution is given by % of A=("Mass A")/("Total mass of solution")xx100 Reason: The mole fraction of a component A is given by, Mole fraction of A =("No. of moles of A")/("Total no. of moles of all components")

The sum of mole fraction of all components of a solution is unity.

Assertion (A): The sum of mole fractions of all the component of a solution is unity. Reason (R ): The mole fraction is a temperature dependent quantity.

Vapor pressure of a solution of Volatile components and composition of vapor: Consider a solution containing 738 g of water and 253 g of ethanol (C_(2)H_(5)OH) at 323 K . At this temperature, the vapour pressure of pure ethanol is 0.292 atm and the vapor pressure of pure water is 0.122 atm . Calculate the vapour pressure of the solution and mole fraction of every component in vapour phase. Strategy: First calculate the moles and the mole fraction of each component in the liquid solution. Then apply Raoult's law to each of the two volatile components to calculate their partial pressures. The total vapour pressure is the sum of the partial vapour pressures of the components and the mole fraction of a components in a gaseous mixture equals the ratio of its partial pressure to the total pressure.

The plot of total vapour pressure as a function of mole fraction of the component of an ideal solution formed by mixing liquids X and Y is

Assertion: The sum of mol fractions of all the components of a solution is unity. Reason: Mole fraction is temperature dependent mode of concentrations.

At a certain temperature, the vapour pressure of pure ether is 640 mm and that of pure acetone is 280 mm . Calculate the mole fraction of each component in the vapour state if the mole fraction of ether in the solution is 0.50.

How is the mole fraction of a gaseous component related to its partial pressure and the total vapour pressure?

TARGET PUBLICATION-SOLUTIONS AND COLLIGATIVE PROPERTIES-Evaluation Test
  1. Mole fraction (x ) of a component is equal to .

    Text Solution

    |

  2. In a flask at a certain temperature , there are 2g H(2) and 8 ...

    Text Solution

    |

  3. An aqueous solution contains 25% acetic acid and 57% ethanol ...

    Text Solution

    |

  4. 4.0 molar solution is obtained when 1.0 mole solute is dissolved ...

    Text Solution

    |

  5. IF 45 mL of 0.2 M solution A is mixed with 60mL of a 0.3 M solu...

    Text Solution

    |

  6. 1000g of aqueous solution of Na(2) CO(3) contains to g to sod...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  11. 0.3 molal aqueous solution of sucrose boils at 100.51 ^(@) C . Th...

    Text Solution

    |

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

    Text Solution

    |

  13. 0.1 M solution each of glucose, sodium chloride, sodium sulphate...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  21. The vapour pressure will be lowest for .

    Text Solution

    |