Home
Class 12
CHEMISTRY
The standard molar enthalpies of formati...

The standard molar enthalpies of formation of cyclohexane (l) and benzene (l) at `25^(@)C "are" -156 and +49kJ mol^(-1)` respectively. The standard enthalpy of hydrogenation of cyclohexene (l) at `25^(@)C` is `-119kJ mol^(-1)`. Use these data to estimate the magnitude of the resonance energy of benzene.

Text Solution

Verified by Experts

The correct Answer is:
8
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL THERMODYNAMICS

    AAKASH SERIES|Exercise Lecture Sheet Exercise-III|23 Videos

  • CHEMICAL THERMODYNAMICS

    AAKASH SERIES|Exercise Lecture Sheet -Exercise-IV|16 Videos

  • CHEMICAL THERMODYNAMICS

    AAKASH SERIES|Exercise Additional Practice Exercise|54 Videos

  • CHEMICAL KINETICS

    AAKASH SERIES|Exercise Objective Exercise - 4 (Assertion (A) & Reason (R) Type Questions)|44 Videos

  • CHEMISTRY IN EVERY DAY LIFE

    AAKASH SERIES|Exercise PRACTICE EXERCISE|29 Videos

Similar Questions

Explore conceptually related problems

The enthalpies of combustion of carbon and carbon monoxide are -390 KJ mol^(-1) and -278 KJ mol^(-1) respectively. The enthalpy of formation of carbon monoxide is

The enthalpy of combustion of cyclohexane cyclohexene and H_2 are respectively -3920, -3800 and -241 KJ mol^(-1) . The heat of hydrogenation of cyclohexene in KJ mol^(-1) is

The standard enthalpies of formation of CO_(2) gas and HCOOH_((l)) are -393.7 kJ mol^(-1) and -409.2 kJ mol^(-1) respectively. Which of the following are correct?

Enthalpy of hydrogenation of cyclohexene is -119Kj/mol and that of benzene is -208kJ/mol. Based on these information, resonance energy of benzene can be calculated to be

The standard enthalpy of formation of hypothetical MgCl is -125kJ mol^(-1) and for MgCl_(2) is -642 kJ mol^(-1) . What is the enthalpy of the disproportionation of MgCl ?

If the standard molar enthalpy of formation of SO _(2 (g)) and SO _(3(g)) is - 296 . 82 kJ mol ^(-1) and -395 . 72 kJ mol ^(-1) respectively, then enthalpy change for the reaction in kJ mol ^(-1) , SO _(2 (g)) + (1)/(2) O _(2 (g)) to SO _(3(g)) , is

The standard enthalpies of formation of H_(2)O_(2(l)) and H_(2)O_((l)) are -187.8kJ "mole"^(-1) and -285.8 kJ "mole"^(-1) respectively. The DeltaH^(0) for the decomposition of one mole of H_(2)O_(2(l)) " to" H_(2)O_((l)) and O_(2(g)) is

The enthalpy of formation (Delta_rH) of methanol, formaldehyde and water -239, -116 and -286KJ mol^-1 respectively. The enthalpy change for the oxidation of emthanol to formaldehyde and water in KJ is

AAKASH SERIES-CHEMICAL THERMODYNAMICS-Lecture Sheet- Exercise-II
  1. If S + O(2) rarr SO(2), DeltaH= -398.2kJ SO(2) + (1)/(2) O(2) rarr S...

    Text Solution

    |

  2. Given C((s)) + O(2(g)) rarr CO(2(g)), Delta H = -395 kJ , S((g)) + O(2...

    Text Solution

    |

  3. The standard heat of formation of sodium ions in aqueous solution from...

    Text Solution

    |

  4. The standard enthalpy of formation (Delta H^(0)) at 298K for methane, ...

    Text Solution

    |

  5. When 50 cm^(3) of 0.2N H(2)SO(4) is mixed with 50cm^(3) of 1N KOH, the...

    Text Solution

    |

  6. Given that the data for neutralization of a weak acid (HA) and strong ...

    Text Solution

    |

  7. When 1.0g of oxalic acid (H(2)C(2)O(4)) is burned in a bomb calorimete...

    Text Solution

    |

  8. Consider the following data: Delta(f) H^(2) (N(2)H(4), l) =50kJ//mol...

    Text Solution

    |

  9. What is the bond enthalpy of Xe-F bond? XeF(4)(g) rarr Xe^(+) (g) + F^...

    Text Solution

    |

  10. Change in enthalpy and change in internal energy are state functions. ...

    Text Solution

    |

  11. Change in enthalpy and change in internal energy are state functions. ...

    Text Solution

    |

  12. Change in enthalpy and change in internal energy are state functions. ...

    Text Solution

    |

  13. The bond dissociation energy depends upon the nature of the bond and n...

    Text Solution

    |

  14. The bond dissociation energy depends upon the nature of the bond and n...

    Text Solution

    |

  15. The bond dissociation energy depends upon the nature of the bond and n...

    Text Solution

    |

  16. Match the following columns

    Text Solution

    |

  17. What is the resonance energy of Benzene in the same units?

    Text Solution

    |

  18. The standard molar enthalpies of formation of cyclohexane (l) and benz...

    Text Solution

    |

  19. Estimate the average S-F bond energy in SF(6). The value of standard e...

    Text Solution

    |

  20. Compute the heat of formation of liquid methyl alcohol in kilojoules p...

    Text Solution

    |