Home
Class 12
CHEMISTRY
For the reaction H(2)+I(2)hArr2NHI, De...

For the reaction
`H_(2)+I_(2)hArr2NHI`, `DeltaH=12.40 kcal`. The heat of formation `(DeltaH)` of `HI` is

A

`12.4 kcal`

B

`-12.4 kcal`

C

`-6.20 kcal`

D

`6.20 kcal`

Text Solution

Verified by Experts

The correct Answer is:
D

`DeltaH_(f)` is for one mole i.e., `(12.40)/(2)=6.20 kcal`.
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL KINETICS

    DINESH PUBLICATION|Exercise Additional Numerical Problems For Practice|16 Videos
  • CHEMISTRY IN EVERY DAY LIFE

    DINESH PUBLICATION|Exercise Unit test-9|50 Videos

Similar Questions

Explore conceptually related problems

For the reaction N_(2)+3H_(2)hArr2NH_(3) , DeltaH=?

For the reaction 2HI hArr H_(2)+I_(2)

If H_2(g) +I_2(g) rarr 2HI(g), Delta H=12.40 kcal . The enthalpy of formation of HI is

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

Reaction, H_(2)(g)+I_(2)(g)to2HI,DeltaH=12.40kcal ltbr. According to this, heat of formation of HI will be:

H_(2) (g) +I_(2) (g) rarr 2HI (g), DeltaH=51.9 kJ . According to this, heat of formation of HI is

DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
  1. Given : C("diamond")+O(2)rarrCO(2),DeltaH=-395 kJ C("graphite"...

    Text Solution

    |

  2. The law of Lavoisier and Laplace illustrates

    Text Solution

    |

  3. For the reaction H(2)+I(2)hArr2NHI, DeltaH=12.40 kcal. The heat of f...

    Text Solution

    |

  4. According to the reaction C(6)H(6)+15//2O(2)to3H(2)O+6CO(2) (Delta...

    Text Solution

    |

  5. Thermodynamic equilibrium involves

    Text Solution

    |

  6. In general, for exothermic reactions to be spontaneous

    Text Solution

    |

  7. The heat of neutrasation of a strong acid and a strong alkali is 57.0K...

    Text Solution

    |

  8. Which of the following is true for a reaction H(2)O(l)toH(2)O(g) at 10...

    Text Solution

    |

  9. The free energy change DeltaG = 0, when

    Text Solution

    |

  10. {:(Given :,C+2StoCS(2),DeltaH=117 kJ),(,C+O(2)toCO(2),DeltaH=-393 kJ),...

    Text Solution

    |

  11. The enthalpies of combustion of carbon and carbon monoxide are -390 kJ...

    Text Solution

    |

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

    Text Solution

    |

  13. Latent heat of vaporisation of a liquid at 500K and 1 atm pressure is ...

    Text Solution

    |

  14. The table given below lists the bond dissociation energy (E("diss")) f...

    Text Solution

    |

  15. The enthalpy of formation for C(2)H(4)(g), CO(2)(g) and H(2)O(l) at 25...

    Text Solution

    |

  16. For a reaction to occur spontaneously

    Text Solution

    |

  17. For a process to be spontaneous

    Text Solution

    |

  18. A particular reaction has a negative value for the free energy change...

    Text Solution

    |

  19. The calorific value of fat is

    Text Solution

    |

  20. The heat of formation of the compound in the following reaction is H...

    Text Solution

    |