Home
Class 12
CHEMISTRY
The enthalpy of combustion of H(2), cycl...

The enthalpy of combustion of `H_(2),` cyclohexene `(C_(6)H_(10))` and cyclohexane `(C_(6)H_(12))` are -241, -3800 and -3920 KJ per mol respectively . Heat of hydrogenation of cyclohexene is

A

`-121 kJ per mol`

B

`+121 kJ per mol`

C

`+242 kJ per mol`

D

`-242 kJ per mol`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (Section -D) Assertion-Reason Type Questions|15 Videos

  • THERMODYNAMICS

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (Section - B) Objective Type Questions|35 Videos

  • THE SOLID STATE

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (SECTION - D) (ASSERTION-REASON TYPE QUESTION)|20 Videos

Similar Questions

Explore conceptually related problems

The enthalpy of combustion of H_(2) , cyclohexene (C_(6)H_(10)) and cyclohexane (C_(6)H_(12)) are -241 , -3800 and -3920KJ per mol respectively. Heat of hydrogenation of cyclohexene is

The standard enthalpy of combustion at 25^(@)C of hydrogen, cyclohexene (C_(6)H_(10)) , and cyclohexane (C_(6)H_(12)) are -241,-3800 , and -3920 kJ mol^(-1) repectively. Calculate the heat of hydrogenation of cyclohexene.

The standard ethelpy of combustion at 25^(@)C of hydrogen, cyclohexene (C_(6)H_(10)) , and cyclohexane (C_(6)H_(12)) are -241,-3800 , and -3920 kJ mol^(-1) repectively. Calculate the heat of hydrogenation of cyclohexane.

The enthalpy of combustion at 25^(@)C of H_(2)(g) , cyclohexane and cyclohexene are -241, 3920 and -3717 kJ "mole"^(-1) respectively. The heat of hydrogenation of cyclohexene is ( Kcal/mole) approximate integer:

The standard molar enthalpies of formation of cyclohexane (I) and benzene(I) at 25^(@)C are -156 and +49 KJ mol^(-1) respectivelyl. The standard enthalpy of hydrogentation of cyclohexene (I) at 25^(@) is -119 KJ mol^(-1) . Use these data to estimate the magnitude of the resonance energy of benzene.

The standard molar enthalpies of formation of cyclohexane (I) and benzene(I) at 25^(@)C are -156 and +49 KJ mol^(-1) respectivelyl. The standard enthalpy of hydrogentation of cyclohexene (I) at 25^(@) is -119 KJ mol^(-1) . Use these data to estimate the magnitude of the resonance energy of benzene.

The heats of combustion of C_(2)H_(4), C_(2)H_(6) and H_(2) gases are -1409.5 KJ, -1558.3 KJ and -285.6 KJ respectively. The heat of hydrogenation of ethene is

The heats of combustion of C_(2)H_(4(g)), C_(2)H_(6(g)) and H_(2(g)) are -1409.4,-1558.3 and -285.6 kJ respectively. Calculate heat of hydrogenation of ethylene.

The molar enthalpies of combustion of C_(2)H_(2)(g), C("graphite") and H_(2)(g) are -1300,-394 , and -286 kJ mol^(-1) , respectively. The standard enthalpy of formation of C_(2)H_(2)(g) is

The heat of combustion of CH_(4)(g), C_(2)H_(6)(g) and H_(2)(g) are -890.3, -1559,7 and -285.9 kJ mol^(-1) , respectively. Which of these fuels is most efficient?

AAKASH INSTITUTE ENGLISH-THERMODYNAMICS-ASSIGNMENT (Section - C) Previous Years Questions
  1. Assume each reaction is carried out in an open container. For which r...

    Text Solution

    |

  2. The enthalpy and entropy change for the reaction Br(2)(l) + Cl(2)(g)...

    Text Solution

    |

  3. The enthalpy of combustion of H(2), cyclohexene (C(6)H(10)) and cycloh...

    Text Solution

    |

  4. A reaction occurs spontaneouly if

    Text Solution

    |

  5. Which of the following pairs of a chemical reaction is certain to resu...

    Text Solution

    |

  6. The magnitude of enthalpy change for neutralization of the reaction , ...

    Text Solution

    |

  7. Which reaction, with the following values of Delta H, Delta S, at 400 ...

    Text Solution

    |

  8. On the basis of theromochemical equations (1), (2) and (3), find out w...

    Text Solution

    |

  9. The combustion reaction occuring in an automobile is 2C(8)H(18)+25O(2)...

    Text Solution

    |

  10. When 5 litres of a gas mixture of methane and propane is perfectly com...

    Text Solution

    |

  11. If enthalpies of formation of C(2)H(4)(g),CO(2)(g) and H(2)O(l) at 25^...

    Text Solution

    |

  12. For a reaction to occur spontaneously :

    Text Solution

    |

  13. Given that , C(s) + O(2)(g) to CO(2)(g), DeltaH^(@)=-xKJ 2CO(g) + ...

    Text Solution

    |

  14. Identify the correct statement regarding entropy

    Text Solution

    |

  15. One mole of an ideal gas at 250 K is expanded isothermally from an ini...

    Text Solution

    |

  16. In the reaction : S+3//2O(2) rarr SO(3)+"2x kcal" and SO(2) +1//2O(2) ...

    Text Solution

    |

  17. At 27 ^(@)C latent heat of fusion of a compound is 3930 J/mol. Entropy...

    Text Solution

    |

  18. For the reaction C2H(5)OH(l) + 3 O(2)(g) rightarrow 2CO(2)(g) + 3 H(2)...

    Text Solution

    |

  19. Change in enthalpy for reaction, 2H(2)O(2)(l) to 2H(2)O(l) + O(2)(g) i...

    Text Solution

    |

  20. When 1 mole gas is heated at constant volume, temperature is raised fr...

    Text Solution

    |