Home
Class 12
CHEMISTRY
Show that the reaction CO(g) +(1//2)O(...

Show that the reaction
`CO(g) +(1//2)O_(2)(g) rarr CO_(2)(g)`
at `300K` is spontaneous and exothermic, when the standard entropy change is `-0.094 k J mol^(-1) K^(-1)`. The standard Gibbs free energies of formation for `CO_(2)`and `CO` are `-394.4`and `-137.2kJ mol^(-1)`, respectively.

A

`Delta G^(@) =257.2 kJ/mol, Delta H^(@)=285.4 kJ//mol`

B

`Delta G^(@)=514.4 kJ//mol, Delta H^(@) =-570.8 kJ//mol`

C

`Delta G^(@)=+514.4 kJ//mol, Delta H^(@)=570.8 kJ//mol`

D

`Delta G^(@) =-257.2 kJ//mol, Delta H^(@)=-285.4 kJ//mol`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • CHEMICAL THERMODYNAMICS AND ENERGETICS

    MARVEL PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS (Third Law of Thermodynamics)|6 Videos

  • CHEMICAL THERMODYNAMICS AND ENERGETICS

    MARVEL PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS (HIGHER LEVEL)|112 Videos

  • CHEMICAL THERMODYNAMICS AND ENERGETICS

    MARVEL PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS (Spontaneous Process, Entropy and Second Law of Thermodynamics)|16 Videos

  • CHEMICAL KINETICS

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP|50 Videos

  • CHEMISTRIY IN EVERYDAY LIFE

    MARVEL PUBLICATION|Exercise TEST YOUR GRAPS|24 Videos

Similar Questions

Explore conceptually related problems

Find DeltaG^(@)andDeltaH^(@) for the reaction CO(g)+(1)/(2)O_(2)(g) toCO_(2)(g)at 300K when the standard entropy is -0.094kJ mol^(_1)K^(-1). The standard Gibbs free energiers fo formation for CO_(2)andCOare-394.4 and-137.2kJ mol^(-1) respectively.

For the reaction CO(g)+(1)/(2) O_(2)(g) hArr CO_(2)(g),K_(p)//K_(c) is

For the reaction, 2NO_(g) + O_(2)(g) rarr 2NO_(2)(g) Calculate DeltaG at 700K when enthalpy and entropy changes are -113.0 kJ mol^(-1) and -145 J K^(-1) mol^(-1) , respectively.

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

MARVEL PUBLICATION-CHEMICAL THERMODYNAMICS AND ENERGETICS-MULTIPLE CHOICE QUESTIONS (Gibbs Free Energy)
  1. 1 mole of CO(2) is available in the gaseous state (at NTP) 1 mole of C...

    Text Solution

    |

  2. Standard state of a gaseous substance indicates that the substance is ...

    Text Solution

    |

  3. One mole of ice is converted into water at 273K. The entropies of H2O(...

    Text Solution

    |

  4. Which one of the following conditions corresponds to a transformation ...

    Text Solution

    |

  5. At 373 K, the heat of transition for H(2)O(l) rarr H(2)O((g))" is "Del...

    Text Solution

    |

  6. For reaction 2Cl((s)) to Cl(2(s)), the signs of Delta H "and " Delta S...

    Text Solution

    |

  7. For an adiabatic process

    Text Solution

    |

  8. Identify the correct statement for change of Gibbs energy for a system...

    Text Solution

    |

  9. Which of the following process proceeds with the +ve value of Delta S?

    Text Solution

    |

  10. At 27^(@)C latent heat of fusion of a compount is 2930 j/mol. Entropy ...

    Text Solution

    |

  11. In thermodynamics, a process is called reversible when

    Text Solution

    |

  12. Free enegry , G = H - TS, is state function that indicates whther a re...

    Text Solution

    |

  13. For 2A((g)) rarr A(2(g)) Delta H and Delta S are :

    Text Solution

    |

  14. Which of the following has DeltaS^(@) greater than zero

    Text Solution

    |

  15. Evaluate the entropy change in the vaporisation of 36 gm water at 373 ...

    Text Solution

    |

  16. Which one is incorrect statement of the second law of thermodynamics?

    Text Solution

    |

  17. The occurrence of a reaction of impossible if

    Text Solution

    |

  18. Show that the reaction CO(g) +(1//2)O(2)(g) rarr CO(2)(g) at 300K ...

    Text Solution

    |

  19. Delta G^(@) for the reaction X+Y hArr Z is -4.606 kcal. The value of e...

    Text Solution

    |

  20. For the equilibrium PCl(5)hArr PCl(3)(g)+Cl(2)(g) at 298 K, K(p)=1.8xx...

    Text Solution

    |