Home
Class 11
CHEMISTRY
Given the bond energirs N=N,H-H and N-H ...

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

A

`-93KJ`

B

`102KJ`

C

`90KJ`

D

`105KJ`

Text Solution

Verified by Experts

The correct Answer is:
A
Net energy released `=2346-2253=93KJ`
i.e. `DeltaH=-93KJ`
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL THERMODYNAMICS

    A2Z|Exercise Assertion - Reasoning Questions|7 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 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

For the reaction, N_(2)(g)+3H_(2)(g) to 2NH_(3)(g)

Name the type of reaction N_(2)(g) + 3H_(2)(g) to 2NH_(3)(g)

For the reaction N_(2)(g) + 3H_(2)(g) hArr 2NH_(3)(g), DeltaH=?

The standard enthyalpy of N_(2(g))+3H_(2(g)rarr2NH_(3(g)) is

Which of the following is correct for the reaction? N_(2)(g) + 3H_(2)(g) rarr 2NH_(3)(g)

A2Z-CHEMICAL THERMODYNAMICS-Section D - Chapter End Test
  1. The work done in erge for the reversible expansion of 1 mole of an ide...

    Text Solution

    |

  2. If 900J//g of heat is exchanged at boiling point of water then water...

    Text Solution

    |

  3. The enthalpy of formation of H(2)O(l) is -280.70 kJ/mol and enthalpy o...

    Text Solution

    |

  4. One gram sample of NH(4)NO(3) is decomposed in a bomb calorimeter. The...

    Text Solution

    |

  5. Calculate the resonance enegry of N(2)O form the following data Delt...

    Text Solution

    |

  6. If a 298K the bond energies of C-H,C-C,C=C and H-H bonds are respectiv...

    Text Solution

    |

  7. The enthalpies of formation of Al(2)O(3) and Cr(2)O(3) are -1596KJ and...

    Text Solution

    |

  8. "The quanity of heat which must be supplied to decompose a compound in...

    Text Solution

    |

  9. C("graphite")+O(2)(g)rarrCO(2)(g) deltaH=-94.05Kcalmol^(-1) C("dia...

    Text Solution

    |

  10. Which of the follwing has lowest fusion temperature ?

    Text Solution

    |

  11. Given the bond energirs N=N,H-H and N-H bonds are 945,436 and 391KJmol...

    Text Solution

    |

  12. For conversion C (graphite)rarrC (diamond) the DeltaS is

    Text Solution

    |

  13. Smelting of iron ore takes place through this reaction 2Fe(2)O(3)(s)...

    Text Solution

    |

  14. For the given heat of reaction, (i) C(s)+O(2)(g)CO(2)(g)+97Kcal (i...

    Text Solution

    |

  15. What is the amount of heat to be supplied to prepare 128g of CaCO(3) b...

    Text Solution

    |

  16. Ionisation energy of A1=5137KJmol^(-1)(DeltaH) hydration of Al^(3+)=-4...

    Text Solution

    |

  17. At 0^(@)C , ice and water are in reuilibrium and DeltaS and DeltaG for...

    Text Solution

    |

  18. Assertion : Molar entropy of vaporization of water is different from e...

    Text Solution

    |

  19. Assertion: The increase in internal energy (DeltaE) for the vaporisati...

    Text Solution

    |

  20. Assertion: The enthalpies of neutralisation of strong acids and strong...

    Text Solution

    |