Home
Class 12
CHEMISTRY
Bond dissociation energies of H(2),Cl(2)...

Bond dissociation energies of `H_(2),Cl_(2)` and `HCl_((g))` are 104, 58 and 103 kcal `"mol"^(-1)` respectively. Calculate the enthalpy of formation of HCl gas.

A

`+44 kCal`

B

`+22 k Cal`

C

`-22 kCal`

D

`-44 kCal`

Text Solution

Verified by Experts

The correct Answer is:
3
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

The bond dissociation energy of gaseous H_(2),Cl_(2) and HCl are 104,58 and 103 kcal mol^(-1) respecitvely. Calculate the enthalpy of formation for HCl gas.

The bond dissociation energies of gaseous H_(2),Cl_(2) , and HCl are 100, 50 , and 100 kcal mol^(-1) , respectively. Calculate the enthalpy of formation of HCl(g) .

The bond dissociation energies of gaseous H_(2),C1_(2) , and HC1 are 100, 50 , and 100 kcal mol^(-1) , respectively. Calculate the enthalpy of formation of HC1(g) .

Bond dissociation enthalpies of H_(2(g)) and N_(2(g)) are "426.0 kJ mol"^(-1) and "941.8 kJ mol"^(-1) , respectively, and enthalpy of formation of NH_(3(g))" is "-"46 kJ mol"^(-1) . What are the enthalpy of atomisation of NH_(3(g)) and the average bond enthalpy of N-H bond respectively ( in kJ "mol"^(-1) )?

Find Delta_(f)H of HCl (g) if bond energies of H_(2), Cl_(2) and HCl are 104, 58, 103 kcal/mol respectively.

Bond dissociation enthalpies of H_(2)(g) and N_(2)(g) are 436.0 kJ mol^(-1) and 941.8 kJ mol^(-1) , respectively, and ethalpy of formation of NH_(3)(g) is -46kJ mol^(-1) . What is the enthalpy fi atomisation of NH_(3)(g) ?. What is the avergae bond ethalpy of N-H bond?

Bond dissociation enthalpy of H_(2) , Cl_(2) and HCl are 434, 242 and 431KJmol^(-1) respectively. Enthalpy of formation of HCl is

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 formation of ethane is -19.46 kcal . Bond enegries of H-H, C -H and C- C bonds are 104.18, 99.0 and 80.0 kcal , respectively. Calculate the heat of atomisation of graphite.

The dissociation energies of H_2and O_2 are 104 and 118 " kcal mol"^(-1) respectively. The heat of reaction 1/2H_2(g) +1/2O_2(g) rarrO-H(g) is 10 kcal. The bond energy of O - H bond is

ALLEN-Thermodynamics And Thermo Chemistry-All Questions
  1. Considering entropy (S) as a thermodynamic parameter, the criterion fo...

    Text Solution

    |

  2. Which one of the follwing has DeltaS^@ greater than zero ?

    Text Solution

    |

  3. Bond dissociation energies of H(2),Cl(2) and HCl((g)) are 104, 58 and ...

    Text Solution

    |

  4. The internal energy change when a system goes from state A to B is 40 ...

    Text Solution

    |

  5. If at 298 K the bond energies of C-H, C-C, C=C and H-H bonds are respe...

    Text Solution

    |

  6. The free energy change for the following reactions are given below ...

    Text Solution

    |

  7. The DeltaH(f)^(@) for CO(2)(g), CO(g) and H(2)O(g) are -395.5,-110.5 a...

    Text Solution

    |

  8. The heat required to raise the temperature of a body by 1^(@)C is call...

    Text Solution

    |

  9. Which is intensive property ?

    Text Solution

    |

  10. Which is correct about DeltaG?

    Text Solution

    |

  11. DeltaE=0 for which process

    Text Solution

    |

  12. Which of the following statements are true

    Text Solution

    |

  13. Which of the following is true for spontaeous process :-

    Text Solution

    |

  14. In which reaction(s), DeltaS in negative?

    Text Solution

    |

  15. Which of the following value of heat of formation indicates that prod...

    Text Solution

    |

  16. Enthalpy change for reaction 1//2H(2)(g)+1//2Cl(2)(g)toHCl(g) is...

    Text Solution

    |

  17. For the reaction PCl(5)(g)toPCl(3)(g)+Cl(2)(g) where ΔH and ΔE represe...

    Text Solution

    |

  18. In an adiabatic expansion of ideal gas

    Text Solution

    |

  19. The heat of combustion of ethanol determined in a bomb calorimeter is ...

    Text Solution

    |

  20. 4S(s)+602to4SO(3)(g),DeltaH f or this reaction is - 1583.2 kJ . The e...

    Text Solution

    |