Home
Class 11
CHEMISTRY
The enthalpy of combustion of cyclohexan...

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 

A

`-121`

B

`+121`

C

`-242`

D

`+242 `

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL THERMODYNAMICS

    AAKASH SERIES|Exercise OBJECTIVE EXERCISE - 2 (ENTROPY AND GIBBS ENERGY)|15 Videos

  • CHEMICAL THERMODYANMICS

    AAKASH SERIES|Exercise Questions For Descriptive Answers|28 Videos

  • ELECTRON MIGRATION EFFECTS

    AAKASH SERIES|Exercise QUESTIONS FOR DESCRIPTIVE ANSWERS|10 Videos

Similar Questions

Explore conceptually related problems

The heats of combustion of hydrogen and cyclohexene are -241 kJ mol^(-1) and -3800 kJ mol^(-1) .The heat of hydrogenation of cyclohexene is -121kJ mol^(-1) . Calculate the heat of combustion of cyclohexane.

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.

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

Heat of formation of water and heats of combustion of ethylene and acetylene are respectively 286, -1410 and -1299 kJ mol^(-1) , Calculate the heat of the reaction, C_2H_(2(g)) + H_(2(g)) to C_(2)H_(4(g)) .

AAKASH SERIES-CHEMICAL THERMODYNAMICS-PRACTICE EXERCISE
  1. The enthalpy of formation of ammonia is -46.0 KJ mol^(-1). The enthalp...

    Text Solution

    |

  2. Which of the following bond has highest enthalpy

    Text Solution

    |

  3. 2C((s))  + 1/2O(2(gg) rarr CO(2(g)) , DeltaH = -787 KJ H(2(g)) + 1/2...

    Text Solution

    |

  4. Heats of combustion of C2H4, H2 and C2H6 are -1409 K.J, -285 K.J and -...

    Text Solution

    |

  5. The enthalpy of combustion of cyclohexane cyclohexene and H2 are respe...

    Text Solution

    |

  6. Given that CH3CHO + 5/2O2 rarr 2CO2 + 2H2O, DeltaH = -1168 KJ//"mole...

    Text Solution

    |

  7. The enthalpy of vapourisation of a liquid is 30 KJ mol^(-1) and entrop...

    Text Solution

    |

  8. H(2(g)) rarr 2H((g)) , DeltaH = 400 KJ , then DeltaS("system") at 2000...

    Text Solution

    |

  9. Show that A ∪ B = A ∩ B implies A = B

    Text Solution

    |

  10. Standard molar entropies of Mg((s)) , C((s)), MgO((s)) & CO((g)) respe...

    Text Solution

    |

  11. DeltaH and DeltaS for certain reaction are -10KJ and - 44J/K, DeltaG^@...

    Text Solution

    |

  12. S^@ of N2, H2 and NH3 respectively are 190, 130 & 111 J/K/mol, then D...

    Text Solution

    |

  13. Kp for the reaction 3/2O(2(g)) overset(rarr)(larr)O(3(g)) at 25^@C is ...

    Text Solution

    |

  14. Zn((s)) + Cu((aq))^(+2) -> Cu((s)) + Zn((aq))^(+2), DeltaG = -XKJ, C...

    Text Solution

    |

  15. For a process change in enthalpy is 36 kJ.mol and change in entropy is...

    Text Solution

    |

  16. For which of the following cases DeltaS = (DeltaH)/T

    Text Solution

    |

  17. Calculate work done when 1 mole of an ideal gas is expanded reversibly...

    Text Solution

    |

  18. The entropy change in adiabatic process is

    Text Solution

    |

  19. If w1, w2, w3, and we are work done in isothermal adiabatic, isobaric ...

    Text Solution

    |

  20. Molar heat capacity (C(p)) of water of constant pressure is 75JK^(-1) ...

    Text Solution

    |