Home
Class 12
CHEMISTRY
The bond dissociation energies of X2, Y2...

The bond dissociation energies of `X_2, Y_2 and XY` are in the ratio of `1 : 0.5 : 1. DeltaH` for the formation of XY is -200 kJ mol^(-1)`. The bond dissociation energy of `X_2` will be

A

100kJ `mol ^(-1)`

B

800kJ `mol ^(-1)`

C

300kJ `mol ^(-1)`

D

`400kJ mol ^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • MOCK TEST 1

    AAKASH INSTITUTE ENGLISH|Exercise EXAMPLE|28 Videos
  • MOCK TEST 11

    AAKASH INSTITUTE ENGLISH|Exercise Example|14 Videos

Similar Questions

Explore conceptually related problems

If the bond dissociation energies of XY , X_(2) and Y_(2) are in the ratio of 1:1:0.5 and DeltaH_(f) for the formation of Xy is -200 KJ//mol . The bond dissociation energy of X_(2) will be :-

The X - X bond dissociation energy is minimum in:

AB,A_(2) and B_(2) are diatomic molecules. If the bond enthalpies of A_(2), AB and B_(2) are in the ratio 1:1:0.5 and the enthalpy of formation of AB from A_(2) and B_(2) is -100kJ mol^(-1) , what is the bond enthalpy of A_(2) ?

AB,A_(2) and B_(2) are diatomic molecules. If the bond enthalpies of A_(2), AB and B_(2) are in the ratio 1:1:0.5 and the enthalpy of formation of AB from A_(2) and B_(2) is -100kJ mol^(-1) , what is the bond enthalpy of A_(2) ?

Bond dissociation energy of F_(2) is less that of Cl_(2) give reason.

Enthalpy change for the reaction, 4H(g) to 2H_2(g) is -869.6 kJ The dissociation energy of H - H bond is

The bond dissociation energy of B-F in BF_(3) is 646 kJ mol^(-1) whereas that of C-F in CF_(4) is 515 kJ mol^(-1) . The correct reason for higher B-F bond dissociation energy as compared to that of C-F in CF_(4) is

The enthalpy of formation of UF(g) is 22kcal mol^(-1) and that of U(g) is 128kcal mol^(-1) . The bond energy of the F-F bond is 37kcal mol^(-1) . The bond dissociation energy of UF(g) is (are):

If bond energy of H_(2),F_(2) and HF are in the ratio 2:1:3 and DeltaH_(a)(H_(2))=400kJ//mol . Then DeltaH_(f)(HF) is :

For Br_2(l) Enthalpy of atomisation = x kJ/mol, Bond dissociation enthalpy of bromine = y kJ/mole, then

AAKASH INSTITUTE ENGLISH-MOCK TEST 10-Example
  1. Work done during isothermal expansion of one mole of an ideal gas from...

    Text Solution

    |

  2. Out of the following, choose the one which is not a part of internal e...

    Text Solution

    |

  3. Pressure volume (PV) work done by an ideal gas system at constant volu...

    Text Solution

    |

  4. 6mole of an ideal gas expand isothermally and reversibly from a volume...

    Text Solution

    |

  5. An ideal gas expands against a constant external pressure of 2.0 atmos...

    Text Solution

    |

  6. The equation 1/2H2(g)+1/2Cl2rarrHCl,DeltaH°= -24080cal means

    Text Solution

    |

  7. when 50 cm^3 of 0.2 N H3SO4 is mixed with 50 cm^3 of 1nKOH,the heat li...

    Text Solution

    |

  8. molar heat capacity of Aluminium is 25 JK^(-1)mol^(-1)the heat necessa...

    Text Solution

    |

  9. What will be the heat of formation of ethane, if the heat of combustio...

    Text Solution

    |

  10. If for H2 gas,Cp -Cv=a and for O2 gas,Cp-Cv=b,where Cp and Cv is heat ...

    Text Solution

    |

  11. In a constant volume calorimeter 5g of a gas with molecular weight 40 ...

    Text Solution

    |

  12. When 1 mole of oxalic acid is treated with excess of NaOH in dilute aq...

    Text Solution

    |

  13. The bond dissociation energies of X2, Y2 and XY are in the ratio of 1 ...

    Text Solution

    |

  14. The species which by definition has zero standard molar enthalpy of fo...

    Text Solution

    |

  15. One mole of anhydrous salt AB dissolves in water and liberates 15 J mo...

    Text Solution

    |

  16. choose the reaction in which DeltaH is not equal to DeltaU

    Text Solution

    |

  17. Hess's law is application for the determination of heat of

    Text Solution

    |

  18. Enthalpy (H) is equal to

    Text Solution

    |

  19. If Delta(f)H^(@)(C(2)H(4)) and Delta(f)H^(@)(C(2)H(6)) are x(1) and x...

    Text Solution

    |

  20. heat of combustion of gaseous compounds A(molar mass =16) B(molar mass...

    Text Solution

    |