Home
Class 11
CHEMISTRY
Bond energy of (N-H) bond is yKJ mol^(-1...

Bond energy of `(N-H)` bond is `yKJ mol^(-1)` under standard state. Thus,change in internal energy in the following process is
`NH_(3)(g)rarrN(g)+3H(g)`

A

`-3yKJmol^(-1)`

B

`-yKJmol^(-1)`

C

`3yKJmol^(-1)`

D

`yKJmol^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D
`H-underset(H)underset(|)(N)-H` (three `N-H`) bonds
Thus, `DeltaE=3yKJmol^(-1)`
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL THERMODYNAMICS

    A2Z|Exercise Entropy, Gibb'S Energy And Spontaneity Of Process|52 Videos

  • CHEMICAL THERMODYNAMICS

    A2Z|Exercise Heat Capacity And Calorimetry|13 Videos

  • CHEMICAL THERMODYNAMICS

    A2Z|Exercise Section D - Chapter End Test|30 Videos

  • CHEMICAL EQUILIBRIUM

    A2Z|Exercise Section D - Chapter End Test|30 Videos

  • CLASSIFICATION OF ELEMENTS AND PERIODICITY OF PROPERTIES

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

Given the bond energirs N=N,H-H and N-H bonds are 945,436 and 391KJmol^(-1) respectively, the enthalpy of the follwing reactlon N_(2)(g)+3H_(2)(g)rarr2NH_(3)(g) is

Given the bond energies N=N , H and H-H bond are 945, 436 and 391KJmol^(-1) respectively, the enthalpy change of the reaction N_(2)(g)+3H_(2)(g)rarr2NH_(3)(g) is

Bond energies of H - H bond is 80 kJ/mol, I - I bond is 100 kJ/mol and for H - I bond is 200 kJ/mol, the enthalpy of the reaction : H_(2)(g) + I_(2)(g) rarr 2HI(g) is

The net enthalpy change of a reaction is the amount of energy required to break all the bonds in reactant molecules minus amount of energy required to form all the bonds in the product molecules.What will be the enthalpy change for the following reaction. H_(2)(g) + Br_(2)(g) to 2HBr(g) Given that bond energy of H_(2), Br_(2) and HBr is 435 kJ mol^(-1) , 192 kJ mol^(-1) and 368 kJ mol^(-1) respectively.

If the enthalpy change for the reaction, CH_(4)(g)+Cl_(2)(g)toCH_(3)Cl(g)+HCl(g),DeltaH=-25 kcal, bond energy of C-H is 20 kcal mol^(-1) greater than the bond energy of C-Cl and bond energies of H-H and H-Cl are same in magnitude, then for the reaction H_(2)(g)+Cl_(2)(g)to2HCl(g),DeltaH= ?

A2Z-CHEMICAL THERMODYNAMICS-Work, Internal Energy And Enthalpy
  1. Heat of hydrogenation of ethene is x(1) and that of benzene is x(2) . ...

    Text Solution

    |

  2. Under the same conditions, how many mL of 1M KOH and 0.5M H(2)SO(4)sol...

    Text Solution

    |

  3. Bond energy of (N-H) bond is yKJ mol^(-1) under standard state. Thus,c...

    Text Solution

    |

  4. The enthaplpy changes state for the following processes are listed bel...

    Text Solution

    |

  5. For the equations C1 ("diamond") +2H(2)(g)rarrCH(4)(g),DeltaH(1) C...

    Text Solution

    |

  6. If H(2)(g)=2H(g),DeltaH=104cal , then heat of atomisation of hydrogen ...

    Text Solution

    |

  7. The average Xe-F bond energy is 34Kcal//mol , first I.E. Of Xe is 279K...

    Text Solution

    |

  8. The standard enthalpy of formation of NH(3) is -46.0KJ mol^(-1) . If t...

    Text Solution

    |

  9. Given H(2)(g)=2H(g)Delta(H-H)=103Kcal mol^(-1) The heat of reaction ...

    Text Solution

    |

  10. Energy required to dissociate 4g of gaseous hydrogen into free gaseous...

    Text Solution

    |

  11. The H-H bond energy is 430KJ mol^(-1) and Cl-Cl bonds is 240KJ mol^(-1...

    Text Solution

    |

  12. Given the bond energies N=N , H and H-H bond are 945, 436 and 391KJmol...

    Text Solution

    |

  13. AB , A(2) and B(2) are diatomic molecules, if the bond enthalpies of A...

    Text Solution

    |

  14. The standard enthalpies of formation of SF(6)(g) , S(g) and F(g) are -...

    Text Solution

    |

  15. Using bond enthalpies (symbolized by epsilon) an estimated value of De...

    Text Solution

    |

  16. The heat of formation of CO(2) is -407KJ//mol . The energy required fo...

    Text Solution

    |

  17. Heat evolved in the reaction H(2)+Cl(2) rarr 2HCl is 182 kJ Bond ene...

    Text Solution

    |

  18. Enthalpy of formation of 2mol of NH(3)(g) is -90KJ , and DeltaH(H-H) a...

    Text Solution

    |

  19. Oxidising power of chlorine in aqueous solution can be determined by t...

    Text Solution

    |

  20. The value of DeltaH(O-H) is 109Kcal//mol . The enthalpy of formation o...

    Text Solution

    |