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

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

A

`245 kJ mol^(-1)`

B

`93 kJ mol^(-1)`

C

`-245 kJ mol^(-1)`

D

`-93 kJ mol^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D
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

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

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.

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 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) )?

The bond dissociation energies for Cl_(2) , I_(2) and IC l are 242.3 , 151.0 and 211.3 kJ//"mole" respectively. The enthalpy of sublimation of iodine is 62.8 kJ //"mole" . What is the standard enthalpy of formation of ICI(g) nearly equal to

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) .

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

From the following data, calculate the enthalpy change for the combustion of cyclopropane at 298K . The enthalpy of formation of CO_(2(g)),H_(2)O_((l)) and Propen e_((g)) are -393,-285.8 and 20.42 kJ mol^(-1) respectively. The enthalpy of isomerisation of cyclopropane to propene is -33.0kJ 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.

AAKASH INSTITUTE ENGLISH-THERMODYNAMICS-ASSIGNMENT (Section - C) Previous Years Questions
  1. The values of DeltaH and DeltaS for the reaction, C("graphite")+CO(2...

    Text Solution

    |

  2. From the following bond energies H-H bond energy 431.37 kJ mol^(-1) ...

    Text Solution

    |

  3. Bond dissociation enthalpy of H(2), Cl(2) and HCl are 434, 242 and 431...

    Text Solution

    |

  4. For the gas-phase decomposition, PCl(5)(g)LeftrightarrowPCl(3)(g)+Cl...

    Text Solution

    |

  5. Which of the following are not state functions ? I. q+w II. Q ...

    Text Solution

    |

  6. Consider the following reactions: (i) H^(+)(aq)+OH^(-)(aq)rarrH(2)O(...

    Text Solution

    |

  7. Given that bond energies of H–H and Cl–Cl are 430 kJ mol^(-1) and 240...

    Text Solution

    |

  8. Identify the correct statement for change of Gibbs free energy for a s...

    Text Solution

    |

  9. Assume each reaction is carried out in an open container. For which r...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  12. A reaction occurs spontaneouly if

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  20. For a reaction to occur spontaneously :

    Text Solution

    |