Home
Class 12
CHEMISTRY
Standard enthalpies of formation of O(3)...

Standard enthalpies of formation of `O_(3),CO_(3),NH_(3) and HI` are 142.2,-383.2,-46.2 and +25.9kJ `mol^(-1)` respectively. The order of their increasing stabilities will be:

A

`O_3, CO_2, NH_3, HI`

B

`CO_2, NH_3, HI, O_3`

C

`O_3, HI, NH_3, CO_2`

D

`NH_3, HI, CO_2, O_3`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL THERMODYNAMICS AND ENERGETICS

    TARGET PUBLICATION|Exercise COMPETITIVE THINKING|97 Videos
  • CHEMICAL THERMODYNAMICS AND ENERGETICS

    TARGET PUBLICATION|Exercise EVALUATION TEST|25 Videos
  • CHEMICAL THERMODYNAMICS AND ENERGETICS

    TARGET PUBLICATION|Exercise EVALUATION TEST|25 Videos
  • CHEMICAL KINETICS

    TARGET PUBLICATION|Exercise Evaluation test|13 Videos
  • CHEMISTRY IN EVERYDAY LIFE

    TARGET PUBLICATION|Exercise 7|3 Videos

Similar Questions

Explore conceptually related problems

Standard enthalpies of formation of O_3,CO_2,NH_3 and HI are 142.2 , - 393.2, -46.2 and +25.9 "kJmol"^(-1) respectively . The order of their increasing stabilities will be

In a fuel celll, methanol is used as a fuel and O_(2) is used as oxidizer. The standard enthalpy of combustion of methanol is -726 kJ mol^(-1) . The standard free energies of formation of CH_(3)OH(I), CO_(2)(g) and H_(2)O(I) are -166.3, -394.4 and -237.1 kJ mol^(-1) respectively. The standard free energy change of the reaction will be

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

Find the value of Delta_(f) H^(@) for the reaction N_(2) O_(4) (g) + 3 CO(g) rarr N_(2) O (g) + 3 CO_(2) (g) Standard enthalpies of formation of CO(g), CI_(2) (g), N_(2) O (g) , and N_(2) O_(4) (g) are - 110, - 393, 81 , and 9.7 kJ mol^(-1) , respectively. Strategy : The standard enthalpy change of a reaction is equal to the sum of the standard molar enthalpie of formation of the products each miltiplied by its stiochiometric coefficient in the balanced equation, minus the corresponding sum of the standard molar enthalpies of formation of the reactants

From the following data, calculate the enthalpy change for the combustion of cyclopropane at 298K . The enthalpy of formation of CO_(2(g)),H_(2)O_((l)) and Propen e_((g)) are -393,-285.8 and 20.42 kJ mol^(-1) respectively. The enthalpy of isomerisation of cyclopropane to propene is -33.0kJ mol^(-1)

The enthalpies of formation of CO and CO_(2) are -110.5 KJ mol^(-1) and -393.5 KJ mol^(-1) respectively. The enthalpy of combustion of carbon monoxide is

TARGET PUBLICATION-CHEMICAL THERMODYNAMICS AND ENERGETICS -CRITICAL THINKING
  1. In the combustion of 2.0 g of methane 25 kcal heat is liberated, heat ...

    Text Solution

    |

  2. The heat evolved in combustion of benzene is given by the following eq...

    Text Solution

    |

  3. Standard enthalpies of formation of O(3),CO(3),NH(3) and HI are 142.2,...

    Text Solution

    |

  4. The heat of atomisation of PH(3(g)) is 228kcal mol^(-1) and that of P(...

    Text Solution

    |

  5. Given the bond energirs N=N,H-H and N-H bonds are 945,436 and 391KJmol...

    Text Solution

    |

  6. Given: (i) S+O2 to SO2, Delta H=-298.2 kJ (ii) SO2 + 1/2 O2 to SO3...

    Text Solution

    |

  7. Calculate the enthalpy of hydrogenation of C2 H(4(g)), given that the...

    Text Solution

    |

  8. Heat of formation of H2 O((l)), CO(2(g)) "and" C2 H(4(g)) are -285.0, ...

    Text Solution

    |

  9. The combustion enthalpies of carbon, hydrogen and methane are -395.5 "...

    Text Solution

    |

  10. The standard molar heat of formation of ethane, CO2 "and" H2 O((l)) "a...

    Text Solution

    |

  11. The H2 O((g)) molecule dissociates as (i) H2 O((g)) to H((g)) + OH((...

    Text Solution

    |

  12. Given: 2C((s)) + 2O(2(g)) to 2CO(2(g)), Delta H1 =-767 kJ …(i) H...

    Text Solution

    |

  13. The standard ethelpy of combustion at 25^(@)C of hydrogen, cyclohexene...

    Text Solution

    |

  14. Diborane is a potential rocket fuel which undergoes combustion accordi...

    Text Solution

    |

  15. The standard heat of combustion of solid boron is equal to

    Text Solution

    |

  16. When total disorder increases, the change is said to be .

    Text Solution

    |

  17. For the process, normal egg rarr hard boiled egg, the sign of DeltaS i...

    Text Solution

    |

  18. In which of the following entropy decreases?

    Text Solution

    |

  19. The enthalpy change for the transition of liquid water to steam, Delta...

    Text Solution

    |

  20. The enthalpy of vaporization of a substance is 840 J per mol and its b...

    Text Solution

    |