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

6.20 kcal

C

`-6.20` kcal

D

`-12.4` kcal

Text Solution

Verified by Experts

The correct Answer is:
B
Heat of formation ` =(12.40)/(2)=6.20` kcal
Promotional Banner

Topper's Solved these Questions

  • AIIMS 1999

    AIIMS PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|60 Videos

  • AIIMS 2001

    AIIMS PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|60 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

AIIMS PREVIOUS YEAR PAPERS-AIIMS 2000-CHEMISTRY
  1. SOCl(2)+CH(3)COOH to CH(3)COCl+HCl+SO(2) . The reaction is endothermi...

    Text Solution

    |

  2. An example of closed system is :

    Text Solution

    |

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

    Text Solution

    |

  4. If 50 ml of A(2)B(3) reacts completely with 200 ml of C(2) in closed v...

    Text Solution

    |

  5. If the atomic number of an element is 33, it will be placed in the per...

    Text Solution

    |

  6. The volume of 10 vol H(2)O(2) required to liberate 500 cm^(3) of O(2) ...

    Text Solution

    |

  7. The oxide of which metal is most stable to heat :

    Text Solution

    |

  8. A hydride of nitrogen which is acidic in nature is :

    Text Solution

    |

  9. Which melts in boiling water :

    Text Solution

    |

  10. Nitric acid may be kept in a bottle of :

    Text Solution

    |

  11. When zinc reacts with very dilute nitric acid it produces

    Text Solution

    |

  12. Which loses weight on exposure to the atmosphere :

    Text Solution

    |

  13. The reactionof chlorine with CO in the presence of sunlight gives :

    Text Solution

    |

  14. The gas used for inflating the tyres of aeroplanes is

    Text Solution

    |

  15. d-Block elements are arranged in ...... of periodic table :

    Text Solution

    |

  16. Which no mixing gives deep brown colour :

    Text Solution

    |

  17. CH-=CH overset(O(3)//NaOH)to X overset(Zn//CH(3)COOH)to Y . Y is

    Text Solution

    |

  18. Which is expected to react most readily with bromine

    Text Solution

    |

  19. The structural formula of the compound which yields ethylene upon reac...

    Text Solution

    |

  20. Glycerol on treatment with potassium hydrogen sulphate yields

    Text Solution

    |