Home
Class 11
CHEMISTRY
The molar enthalpy of vapourisation of a...

The molar enthalpy of vapourisation of acetone is less than that of water. Why ?

Text Solution

Verified by Experts

Amount of heat required to vaporise one mole of a liquid at constant temperature and under standard pressure (1 bar) is called its molar enthalpy of vaporisation `Delta_("vap") H^( Theta )`.
Molar enthalpy of vaporisation of water is more than of acetone because there is strong hydrogen bonding in `H_(2) O` molecule.
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    KUMAR PRAKASHAN|Exercise Section - D Solutions of NCERT Exemplar Problems ( Matching The Columns )|4 Videos

  • THERMODYNAMICS

    KUMAR PRAKASHAN|Exercise Section - D Solutions of NCERT Exemplar Problems ( Assertion and Reason )|3 Videos

  • THERMODYNAMICS

    KUMAR PRAKASHAN|Exercise Section - D Solutions of NCERT Exemplar Problems MCQs (more than one options)|5 Videos

  • THE s-BLOCK ELEMENTS

    KUMAR PRAKASHAN|Exercise Section-D NCERT Exemplar Solution (Long Answer Type)|8 Videos

Similar Questions

Explore conceptually related problems

Acetone and carbon disulphide form binary liquid solution showing positive deviation from Raoult's law. The normal boiling point (T_(b)) of pure acetone is less than that of pure CS_(2) . Pick out the incorrect statement among the following :

KUMAR PRAKASHAN-THERMODYNAMICS-Section - D Solutions of NCERT Exemplar Problems ( Short Answer Type Questions )
  1. A sample of 1.0 mol of a monoatomic ideal gas is taken through a cycli...

    Text Solution

    |

  2. The standard molar entropy of H(2) O((l)) is 70 "JK"^(-1) "mol"^(-1). ...

    Text Solution

    |

  3. Which of the following is not a state functions?

    Text Solution

    |

  4. The molar enthalpy of vapourisation of acetone is less than that of wa...

    Text Solution

    |

  5. Which quantity out of Delta(r) G and Delta(r) G^( Theta ) will be zero...

    Text Solution

    |

  6. Predict the change in internal energy for an isolated system at consta...

    Text Solution

    |

  7. Although heat is a path function but heat absorbed by the system under...

    Text Solution

    |

  8. Expansion of a gas in vacuum is called free expansion. Calculate the w...

    Text Solution

    |

  9. Heat capacity (Cp) is an extensive property but specific heat (c) is a...

    Text Solution

    |

  10. The difference between Cp and Cv can be can be H=U + pV. Calculate the...

    Text Solution

    |

  11. If the combustion of 1 g of graphite produces -20. 7 kJ of heat, what ...

    Text Solution

    |

  12. The net enthalpy change of a reaction is the amount of energy required...

    Text Solution

    |

  13. The enthalpy of vaporisation of "CC"I(4) is 30.5 kJ mol""^(-1). Calcul...

    Text Solution

    |

  14. The enthalpy of reaction for the reaction : 2H((g)) + O(2(g)) to 2H(2)...

    Text Solution

    |

  15. What will be the work done on an ideal gas enclosed in a cylinder, whe...

    Text Solution

    |

  16. How will you calculate work done on an ideal gas in a compression, whe...

    Text Solution

    |

  17. Represent the potential energy / enthalpy change in the following proc...

    Text Solution

    |

  18. Enthalpy diagram for a particular reaction is given in Fig. Is it poss...

    Text Solution

    |

  19. 1.0 mol of a monoatomic ideal gas is expanded from state (1) to state ...

    Text Solution

    |

  20. An ideal gas is allowed to expand against a constant pressure of 2 bar...

    Text Solution

    |