Home
Class 12
CHEMISTRY
Given : C(2)H(6)(g) rarr 2C(g) + 6H(g)...

Given :
`C_(2)H_(6)(g) rarr 2C(g) + 6H(g) : Delta H = 712 kcal`
The C - C bond energy is 112 kcal, what is the C - H bond energy ?

A

88 kcal

B

12 kcal

C

50 kcal

D

100 kcal

Text Solution

Verified by Experts

The correct Answer is:
D

Bonds energy of 6 C-H bonds
= 712 - 112 = 600 kcal
Bond energy of one C-H bond = 100 kcal
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    MODERN PUBLICATION|Exercise Multiple Choice Questions (Level-III)|10 Videos
  • THERMODYNAMICS

    MODERN PUBLICATION|Exercise Recent Examination Question|15 Videos
  • THERMODYNAMICS

    MODERN PUBLICATION|Exercise Recent Examination Question|15 Videos
  • THE SOLID STATE

    MODERN PUBLICATION|Exercise RECENT EXAMINATION QUESTIONS|11 Videos
  • UNIT TEST - 3

    MODERN PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS|59 Videos

Similar Questions

Explore conceptually related problems

What is H-C-H bond angle in methane ?

The C-H bond distance is longest in

H_(2)(g) + I_(2) hArr 2HI(g): Delta H = 12.40 kcal . According to this reaction, heat of formation of HI will be

The enthalpy changes at 25^(@)C in successive breaking of O - H bonds of water are : H_(2)O(g) rarr H(g) + OH(g) Delta H = 498 kJ mol^(-1) OH(g) rarr H(g) + O(g) Delta H = 428 kJ mol^(-1) The bond enthalpy of the O-H bond is :

In the series ethane,ethylene and acetylene, the C-H bond energy is

H_(2)(g) + (1)/(2)O_(2)(g) rarr H_(2)O(g) Delta H = -242 kJ mol^(-1) . Bond energy of H_(2) and O_(2) are 436 mol^(-1) and 500 mol^(-1) respectively. What is the bond energy of the O-H bond ?

MODERN PUBLICATION-THERMODYNAMICS-Multiple Choice Questions (Level-II)
  1. The enthalpies of elements in their standard states are taken as zero....

    Text Solution

    |

  2. Enthalpy of sublimation of a substance is equal to

    Text Solution

    |

  3. Which of the following is not correct ?

    Text Solution

    |

  4. On the basis of thermochemical equation (a), (b) and (c ), which of th...

    Text Solution

    |

  5. The standard free energy changes (Delta G^(@)) is related to equilibri...

    Text Solution

    |

  6. If Delta(f)G^(@) for NH(3)(g) is - 16.4 kJ mol^(-1), then Delta G^(@) ...

    Text Solution

    |

  7. A cylinder of gas supplied by Bharat Petroleum is assumed to contain 1...

    Text Solution

    |

  8. Given : C(2)H(6)(g) rarr 2C(g) + 6H(g) : Delta H = 712 kcal The C ...

    Text Solution

    |

  9. Four grams of graphite is burnt in a bomb calorimeter of heat capacity...

    Text Solution

    |

  10. A chemical reaction is spontaneous at 298 K but non-spontaneous at 350...

    Text Solution

    |

  11. The bond energies of of C - C, C = C, H - H and C - H linkages are 350...

    Text Solution

    |

  12. Two moles of an ideal gas is expanded isothermally and reversible from...

    Text Solution

    |

  13. To neutrealize completely 20 mL of 0.1 M aqueous solution of phosphoru...

    Text Solution

    |

  14. The rusting of iron takes place as follows : 2H^(+) + 2e^(-) + (1)/(...

    Text Solution

    |

  15. For a spontaneous reaction, Delta G, equilibrium constant (K) and E(ce...

    Text Solution

    |

  16. Consider an endothermic reaction : XrarrY with activation energie...

    Text Solution

    |

  17. Consider the reaction, N(2) + 3H(2) rarr 2NH(3) carried out ata consta...

    Text Solution

    |

  18. If the bond dissociation energy of XY, x (2) AND y(2) (all diatomic m...

    Text Solution

    |

  19. (Delta U - Delta H) for the formation of carbon monoxide (CO) from its...

    Text Solution

    |

  20. For the process : H(2)O(l) (1 bar, 373 K) rarr H(2)O(g) (1 bar, 373 ...

    Text Solution

    |