Home
Class 12
CHEMISTRY
Which of the following value of DeltaH(f...

Which of the following value of `DeltaH_(f)^(@)` represent that the product is least stable ?

A

`-94.0 kcal mol^(-1)`

B

`-231.6 kcal mol^(-1)`

C

`+21.4 kcal mol^(-1)`

D

`+64.8 kcal mol^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D

More `+ve` is `DeltaH_(f)` less is the stability.
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

Which of the following defines DeltaH_(f)^@ ?

Which of the following values of heat of formation indicates that the product is least stable?

Which of the following values of heat of formation indicates that the product is least stable?

Which of the following value of heat of formation indicates that product is least stable

Which of the following is least stable

Which of the following is least stable

DINESH PUBLICATION-CHEMICAL THERMODYNAMICS AND CHEMICAL ENERGETICS -Exercise
  1. The maximum efficiency of heat engine operating between 100 ^(@) and 2...

    Text Solution

    |

  2. A gas absorbs 250 J of heat and expands from 1 litre to 10 litres agai...

    Text Solution

    |

  3. Which of the following value of DeltaH(f)^(@) represent that the produ...

    Text Solution

    |

  4. The enthalpies of formation of N(2)O and NO are respectively 82 and 90...

    Text Solution

    |

  5. The value of DeltaH(O-H) is 109 kcal mol^(-1). Then formation of one m...

    Text Solution

    |

  6. The heat of combustion of yellow phoshphorus and red phosphorus are -9...

    Text Solution

    |

  7. For a system in equilibrium, DeltaG=0, under conditions of constant

    Text Solution

    |

  8. In the reversible reaction of the type A+B hArr AB, in general.

    Text Solution

    |

  9. Given C(s)+O(2)(g)toCO(2)(g), DeltaH=-395 kJ S(s)+O(2)(g)toSO(2)(g...

    Text Solution

    |

  10. In an electrochemical cell, if E^(@) is the e.m.f. of the cell involvi...

    Text Solution

    |

  11. If the enthalpy of vaporisation of water is 186.5 J mol^(-1), then ent...

    Text Solution

    |

  12. The DeltaH value for reaction C+(1)/(2)O(2)toCO and CO+(1)/(2)O(2)to...

    Text Solution

    |

  13. Given : C("diamond")+O(2)rarrCO(2),DeltaH=-395 kJ C("graphite"...

    Text Solution

    |

  14. The law of Lavoisier and Laplace illustrates

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  17. Thermodynamic equilibrium involves

    Text Solution

    |

  18. In general, for exothermic reactions to be spontaneous

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |