Home
Class 11
CHEMISTRY
Using the data ( all vaues in kcal mol^(...

Using the data `(` all vaues in `kcal mol^(-1) at 25^(@)C)` given below, calculate bond energy of `C-C` and `C-H` bonds.
`C_((s))rarr C_((g)), DeltaH=172`
`H_(2) rarr 2H, DeltaH=104`
`H_(2)+(1)/(2)O_(2) rarr H_(2)O_((l)), DeltaH=-68.0`
`C_((s))+O_(2) rarr CO_(2), Delta H=-94.0`
Heat of combustion of `C_(2)H_(6)=-372.0`
Heat of combustion of `C_(3)H_(8)=-530.0`

Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    CENGAGE CHEMISTRY|Exercise Archives (True/False)|2 Videos

  • STOICHIOMETRY

    CENGAGE CHEMISTRY|Exercise Archives Subjective|33 Videos

Similar Questions

Explore conceptually related problems

If H_(2)S+3/2 O_(2) rarr H_(2)O+SO_(2) , DeltaH=-136.7 Kcal H_(2)+1/2 O_(2) rarr H_(2)O, DeltaH=-68.4 Kcal S+O_(2) rarr SO_(2), DeltaH=-71 Kcal What is DeltaH_(f) of H_(2)S

Given that - 2C(s)+2O_(2)(g)rarr 2CO_(2)(g) Delta H = -787 KJ H_(2)(g)+ 1//2O_(2)(g)rarr H_(2)O(l) Delta =-286 KJ C_(2)H_(2)(g)+(5)/(2)O_(2)(g)rarr H_(2)O(l) Delta H=-1310 KJ Heat of formation of acetylene is :-

From the following data at 25^(@)C , calculate the bond energy of O – H bond: (i) H_(2)(g) to 2H(g), Delta H_(1) = 104.2 kcal (ii) O_(2)(g) to 2O(g), DeltaH_(2) = 118.4 kcal (iii) H_(2)(g) + 1/2 O_(2)(g) to H_(2)O(g), Delta H_(3) = -57.8 k cal

Calculate the heat of combustion of benzene form the following data: a. 6C(s) +3H_(2)(g) rarr C_(6)H_(6)(l), DeltaH = 49.0 kJ b. H_(2)(g) +1//2O_(2)(g) rarr H_(2)O(l), DeltaH =- 285.8 kJ c. C(s) +O_(2) (g) rarr CO_(2)(g), DeltaH =- 389.3 kJ

Statement : C+(1)/(2)O_(2) rarr CO, DeltaH=-26.0kcal CO+(1)/(2)O_(2) rarr CO_(2), DeltaH=-68.3kcal :. C+O_(2) rarr CO_(2),DeltaH=-94.3 kcal Explanation : This is an experimental proof of Hess's law.

CENGAGE CHEMISTRY-THERMODYNAMICS-Archives (Subjective)
  1. The following statements is true only under some specific conditions. ...

    Text Solution

    |

  2. The bond dissociation energies of gaseous H(2),C1(2), and HC1 are 100,...

    Text Solution

    |

  3. The standard molar heats of formation of ethane, carbon dioxide, and l...

    Text Solution

    |

  4. An intimate mixture of ferric oxide and aluminium is used as solid fue...

    Text Solution

    |

  5. The standard ethelpy of combustion at 25^(@)C of hydrogen, cyclohexene...

    Text Solution

    |

  6. Using the data ( all vaues in kcal mol^(-1) at 25^(@)C) given below, c...

    Text Solution

    |

  7. Determine enthalpy change for, C(3)H(8(g))+H(2(g))rarr C(2)H(6(g))+C...

    Text Solution

    |

  8. Compute the heat of formation of liquie methyl alcohol is kilojoule pe...

    Text Solution

    |

  9. From the following data, calculate the enthalpy change for the combust...

    Text Solution

    |

  10. The standard heat of formation values of SF(6)(g), S(g), and F(g) are ...

    Text Solution

    |

  11. Show that the reaction CO(g) +(1//2)O(2)(g) rarr CO(2)(g) at 300K ...

    Text Solution

    |

  12. A sample of argon gas at 1atm pressure and 27^(@)C expands reversibly ...

    Text Solution

    |

  13. Diborane is a potential rocket fuel that undergoes combustion accordin...

    Text Solution

    |

  14. The standard potential of the following cell is 0.23V at 15^(@)C and 0...

    Text Solution

    |

  15. When 1pentyne (A) is treated with 4N alcoholic KOH at 175^(@)C, it is ...

    Text Solution

    |

  16. Two moles of a perfect gas undergo the following processes: a. A rev...

    Text Solution

    |

  17. C(v) values of He is always (3R)/(2) but C(v) values of H(2) is (3R)/(...

    Text Solution

    |

  18. In the reaction equilibrium N(2)O(4) hArr 2NO(2)(g) When 5 mol of ...

    Text Solution

    |

  19. 100mL of a liquid is contained in an insulated container at a pressure...

    Text Solution

    |

  20. For the reaction 2CO +O(2) rarr 2CO(2), DeltaH =- 560 kJ, 2mol of ...

    Text Solution

    |