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

12.40 Kcal

B

`-12.40` Kcal

C

`-6.20` Kcal

D

6.20 Kcal

Text Solution

Verified by Experts

The correct Answer is:
D
`(1)/(2)H_(2(g))+(1)/(2)I_(2(g))rarr HI_((g)) , Delta H_(f) = ?`
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    ALLEN|Exercise EXERCISE -4|18 Videos

  • THERMODYNAMICS

    ALLEN|Exercise EXERCISE -2|100 Videos

  • TEST PAPERS

    ALLEN|Exercise CHEMISTRY|19 Videos

  • Thermodynamics And Thermo Chemistry

    ALLEN|Exercise All Questions|39 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

ALLEN-THERMODYNAMICS -EXERCISE -3
  1. For the reactions, (i) H(2)(g)+Cl(2)(g)rarr 2HCl(g)+ xKJ (ii) H(2)...

    Text Solution

    |

  2. Since the enthalpy of elements in their natural state is taken to be z...

    Text Solution

    |

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

    Text Solution

    |

  4. At 300K , the standard enthalpies of formation of C(6)H(5)COOH((s),CO(...

    Text Solution

    |

  5. Enthalpy of a compound is equal to its :- (When it is formed from cons...

    Text Solution

    |

  6. Which of the following equations respresents standard heat of formatio...

    Text Solution

    |

  7. The enthalpy of formation of ammonia is -46.0 KJ mol^(-1) . The entha...

    Text Solution

    |

  8. Given the enthalpy of formation of CO(2)(g) is -94.0 KJ, of CaO(s) is ...

    Text Solution

    |

  9. Given that standard heat enthalpy of CH(4), C(2)H(4) and C(3)H(8) are...

    Text Solution

    |

  10. The standard molar heats of formation of ethane, carbon dioxide, and l...

    Text Solution

    |

  11. Teo atoms of hydrogen combine to form a molecule of hydrogen gas, the ...

    Text Solution

    |

  12. Delta(f)^(@) for CO(2(g)), CO((g)) and H(2)O((g)) are -393.5,-110.5 an...

    Text Solution

    |

  13. The enthalpies of combustion of carbon and carbon monoxide are -393.5 ...

    Text Solution

    |

  14. Calculate the standard heat of formation of carbon disulphide (l). Giv...

    Text Solution

    |

  15. The heat of combustion of CH(4(g)), C((g)) and H(2(g)) at 25^(@)C are ...

    Text Solution

    |

  16. Standard enthalpy of formation is zero for.

    Text Solution

    |

  17. The standard heats of formation of NO(2)(g) and N(2)O(4)(g) are 0.8 an...

    Text Solution

    |

  18. M is a metal that forms an oxide M(2)O,(1)/(2)M(2)O rarr M+(1)/(4)O(2)...

    Text Solution

    |

  19. According to equation, C(6)H(6)(l)+15//2 O(2)(g)rarr 6CO(2)(g)+3H(2)O(...

    Text Solution

    |

  20. Heat of combustion of CH(4),C(2)H(6), C(2)H(4) and C(2)H(2) gases are ...

    Text Solution

    |