Home
Class 12
CHEMISTRY
The standard enthalpy of formation of hy...

The standard enthalpy of formation of hypothetical MgCl is `-125kJ mol^(-1)` and for `MgCl_(2)` is -642 kJ `mol^(-1)`. What is the enthalpy of the disproportionation of MgCl ?

A

`-492 kJ mol^(-1)`

B

`-392 kJ mol^(-1)`

C

`-767 kJ mol^(-1)`

D

`-517 kJ mol^(-1)`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • CHEMICAL THERMODYNAMICS

    AAKASH SERIES|Exercise Practice Sheet- Exercise-IV|20 Videos

  • CHEMICAL KINETICS

    AAKASH SERIES|Exercise Objective Exercise - 4 (Assertion (A) & Reason (R) Type Questions)|44 Videos

  • CHEMISTRY IN EVERY DAY LIFE

    AAKASH SERIES|Exercise PRACTICE EXERCISE|29 Videos

Similar Questions

Explore conceptually related problems

If the standard molar enthalpy of formation of SO _(2 (g)) and SO _(3(g)) is - 296 . 82 kJ mol ^(-1) and -395 . 72 kJ mol ^(-1) respectively, then enthalpy change for the reaction in kJ mol ^(-1) , SO _(2 (g)) + (1)/(2) O _(2 (g)) to SO _(3(g)) , is

The standard enthalpies of formation of CO_(2) gas and HCOOH_((l)) are -393.7 kJ mol^(-1) and -409.2 kJ mol^(-1) respectively. Which of the following are correct?

The standard molar enthalpies of formation of cyclohexane (l) and benzene (l) at 25^(@)C "are" -156 and +49kJ mol^(-1) respectively. The standard enthalpy of hydrogenation of cyclohexene (l) at 25^(@)C is -119kJ mol^(-1) . Use these data to estimate the magnitude of the resonance energy of benzene.

If the activation energy for the forward reaction is 150kJ mol^(-1) and that of the reverse reaction is 260kJ mol^(-1) . What is the enthalpy change for the reaction

Calculate the lattice enthalpy of calcium oxide from the following data. Data found in the IB chemistry data booklet and the Born Haber cycle drawn in part (a) enthalpy of atomisation of Ca_((s)) = + 178kJ mol^(-1) second ionization energy of Ca_((g))= +1150 kJ mol^(-1) enthalpy of formation of calcium oxide = -635 kJ mol^(-1 )

The enthalpies of combustion of carbon and carbon monoxide are -390 KJ mol^(-1) and -278 KJ mol^(-1) respectively. The enthalpy of formation of carbon monoxide is

The standard enthalpy of formation (Delta H^(0)) at 298K for methane, CH_(4(g)) is 74.8 kJ mol^(1) . The additional information required to determine the average energy for C-H bond formation would be

AAKASH SERIES-CHEMICAL THERMODYNAMICS-Additional Practice Exercise
  1. The enthalpy of neutralization of weak monoprotic acid, HA in 1M solut...

    Text Solution

    |

  2. The heat of combustion of hydrocarbon C(x)H(y) is ''a'' calories and h...

    Text Solution

    |

  3. The standard enthalpy of formation of hypothetical MgCl is -125kJ mol^...

    Text Solution

    |

  4. Calculate the resonance energy of N(2)O from the following data Delta ...

    Text Solution

    |

  5. The maximum entropy of mixing ocuurs when hexane and heptane are mixed...

    Text Solution

    |

  6. When 3.0 mole of an ideal diatomic gas is heated and compressed simult...

    Text Solution

    |

  7. underset(P(1), V(1), T(1))("State") A overset("Rev")rarr underset(P(2)...

    Text Solution

    |

  8. During winters, moisture condenses in the form of dew and can be seen ...

    Text Solution

    |

  9. Assuming Delta H^(0) and Delta S^(0) do not change with temperature th...

    Text Solution

    |

  10. For the reaction X(2)O(4(l)) rarr 2XO(2(g)), Delta U= 2.1 "kcal", Delt...

    Text Solution

    |

  11. The correct signs of Delta S for the following four processes respecti...

    Text Solution

    |

  12. Assume that C(6)H(6) and C(6)H(5)CH(3) form an ideal solution then Del...

    Text Solution

    |

  13. One mole of Ideal monatomic gas taken through Isochoric heating for 10...

    Text Solution

    |

  14. Work (W) is the path function. Which of the following order is incorre...

    Text Solution

    |

  15. Standar entropies of x(2), y(2) and xy(3) are 60,40 and 50JK^(-1) mol^...

    Text Solution

    |

  16. Temperature of an ideal gas increases in:

    Text Solution

    |

  17. As a rubber band is stretched, it gets warmer, when released, it gets ...

    Text Solution

    |

  18. A system undergoes two cyclic process 1 and 2. Process 1 is reversible...

    Text Solution

    |

  19. A certain gas is expanded from (1L, 10atm) to (4L, 5atm) against a con...

    Text Solution

    |

  20. The standard enthalpies of formation of CO(2) gas and HCOOH((l)) are -...

    Text Solution

    |