Home
Class 12
CHEMISTRY
Between O(2)(g) and O(3)(g), whose stand...

Between `O_(2)(g) and O_(3)(g)`, whose standard enthalpy of formation `(DeltaH_(f)^(0))` is taken as zero at 1 atm and `25^(@)C`?

Text Solution

Verified by Experts

`O_(2)(g)`, because at `25^(@)C` the standard state of oxygen is `O_(2)(g)`.
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL THERMODYNAMICS

    CHHAYA PUBLICATION|Exercise FILL IN THE BLANKS|23 Videos

  • CHEMICAL THERMODYNAMICS

    CHHAYA PUBLICATION|Exercise SHORT TYPE QUESTIONS|37 Videos

  • CHEMICAL THERMODYNAMICS

    CHHAYA PUBLICATION|Exercise MCQ HOTSPOT (SINGLE CORRENT TYPE)|71 Videos

  • CHEMICAL KINETICS

    CHHAYA PUBLICATION|Exercise EXERCISE (NUMERICAL PROBLEMS)|37 Videos

  • CHEMISTRY IN EVERYDAY LIFE

    CHHAYA PUBLICATION|Exercise PRACTICE SET 15|15 Videos

Similar Questions

Explore conceptually related problems

In which of the following standard enthalpy of formation (Delta H_(f)^(0)) is zero ?

In which of the following reactions does DeltaH^(0) at 25^(@)C indicate the standard enthalpy of formation (DeltaH_(f)^(0)) of the compound formed in each of the reactions? (2) N_(2)(g)+3H_(2)(g)to2NH_(3)(g) (2) (1)/(2)N_(2)(g)+(1)/(3)O_(3)(g)toNO(g) .

Find the value of DeltaG^(0) and K_(c) for the following reaction at 298K. NO(g)+(1)/(2)O_(2)(g)hArrNO_(2)(g) Given: standard free energy of formation (DeltaG_(f)^(0)) of NO_(2) and NO are 52.0 and 87.0 kJ*mol^(-1) respectively.

Calculate the standard enthalpy of reaction at 25^(@)C temperature for the following reaction: C_(6)H_(6)(l)+(15)/(2)O_(2)(g) to 6CO_(2)(g)+3H_(2)O(l) Given:The standard enthalpy of formation of C_(6)H_(6),CO_(2)(g) and H_(2)O(l) are 49.0 kJ *mol^(-1),-393.5kJ*mol^(-1) and -285.8kJ*mol^(-1) respectively.

Calculate the value of enthalpy of combustion of cyclopropane at 25^(@)C and 1 atm pressure. Given: Standard enthalpy of formation of CO_(2)(g),H_(2)O(l) & propene (g) at 25^(@)C are -393.5kJ*mol^(_1),-285.8kJ*mol^(-1)& 20.4kJ*mol^(-1) respectively. also standard enthalpy change for isomerisation reaction: Cyclopropane (g) hArr Propene (g) is -33.0kJ*mol^(-1) .

Calculate the standard enthalpy of reaction at 25^@C temperature for the following reaction : C_6H_6(I) + frac 15/2 O_2 (g) rarr 6CO_2(g)+3H_2O(I) . Given: The standard enthalpy of formation of C_6H_6(I) , .CO_2(g) and H_2O(I) are 49.0kJ mol^-1 , -393.5 kJ mol^-1 and -285.8 kJ mol^-1 respectively.

Given: NH_(3)(g)+3Cl_(2)(g)toNCl_(3) (g)+3HCl(g),-DeltaH_(1) N_(2)(g)+3H_(2)(g)to2NH_(3)(g),DeltaH_(2) H_(2)(g)+Cl_(2)(g)to2HCl(g),DeltaH_(3) Heat of formation (DeltaH_(f)) of NCl_(3) in terms of DeltaH_(1), DeltaH_(2) and DeltaH_(3) is-

At 25^(@)C the standard reaction enthalpy for the reaction AB_(3)(g)to(1)/(2) A_(2)(g)+(3)/(2)B_(2)(g) is DeltaH^(0) . Find the standard reaction enthalpy for the reaction A_(2)(g)+3B_(2)(g) to 2AB_(3)(g) at 25^(@)C .

CHHAYA PUBLICATION-CHEMICAL THERMODYNAMICS-VERY SHORT TYPE QUESTIONS
  1. Which allotropic form of carbon is considered as a source of carbon in...

    Text Solution

    |

  2. Which of the following two reactions indicates the formation reaction ...

    Text Solution

    |

  3. Between O(2)(g) and O(3)(g), whose standard enthalpy of formation (Del...

    Text Solution

    |

  4. In which of the following reactions the standard heat of reaction is e...

    Text Solution

    |

  5. Heat required to vaporise 1 g of water at 100^(@)C and 1 atm is 2.26 k...

    Text Solution

    |

  6. 1 mol of H(2)O(l) is formed when 1 mol of H^(+) ions and 1 mol of OH^(...

    Text Solution

    |

  7. Consider the reaction: (i) A(2)(s)+B(2)(g)toA(2)(g)+B(2)(g),DeltaH=-...

    Text Solution

    |

  8. S(monoclinic, s)toS(rhombic, s). What is enthalpy change of this proce...

    Text Solution

    |

  9. H(2)(g)+(1)/(2)O(2)(g) to H^(+)(aq)+OH^(-)(aq),DeltaH^(0)=-228.5kJ*mol...

    Text Solution

    |

  10. The bond dissociation energies of three A-B bonds in AB(3)(g) molecule...

    Text Solution

    |

  11. Why is the heat of reaction of a reaction occurring in a bomb calorime...

    Text Solution

    |

  12. For which type of molecule the bond energy is equal to the bond dissoc...

    Text Solution

    |

  13. What will be the difference between DeltaH and DeltaU in the combustio...

    Text Solution

    |

  14. Write down the relation between DeltaH and DeltaU for the following re...

    Text Solution

    |

  15. If the bond energy of C-H bond is +416.18 kJ*mol^(-1), then what will ...

    Text Solution

    |

  16. What is the most important feature of Hess's law?

    Text Solution

    |

  17. The standard bond dissociation energy of A(2)(g),B(2)(g) and AB(g) mol...

    Text Solution

    |

  18. At temperature TK the difference between DeltaH and DeltaU for the fol...

    Text Solution

    |

  19. Give an example of a spontaneous process in which the change in enthal...

    Text Solution

    |

  20. What will be the sign of enthalpy change and entropy change for a proc...

    Text Solution

    |