Home
Class 11
CHEMISTRY
If DeltaG=-177 kcal for " ...

If `DeltaG=-177 kcal` for
`" "(1)2Fe(s)+(3)/(2)O_(2)toFe_(2)O_(3)(s)`
and `DeltaG=-19 k cal` for
`" "(2)4FeO_(3)(s)+Fe(s)to3Fe_(3)O_(4)(s)`
What is the Gibbs free energy of formation of `Fe_(3)O_(4)`?

A

`+229.6 kcal//mol`

B

`-242.3 kcal//mol`

C

`-727 kcal//mol`

D

`-229.6 kcal//mol`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • SALT ANALYSIS

    GRB PUBLICATION|Exercise Subjective Type|69 Videos

Similar Questions

Explore conceptually related problems

What is the oxidation number of Fe in K_(3)[Fe(C_(2)O_(4))_(3)] ?

Fe_(2)O_(3) (S) + 2AI (s) to 2Fe(l) + AI_(2)O_(3)(s) + Heat . This reaction is called .

Fe(s)+H_(2)O(l) overset(Boil) to Fe_(3)O_(4)+H_(2)uarr

Given: i. 2Fe(s) +(3)/(2)O_(2)(g) rarr Fe_(2)O_(3)(s), DeltaH^(Theta) =- 193.4 kJ ii. Mg(s) +(1)/(2)O_(2)(g) rarr MgO(s), DeltaH^(Theta) =- 140.2kJ What is DeltaH^(Theta) of the reaction? 3Mg +Fe_(2)O_(3)rarr 3MgO +2Fe

2Fe+(3)/(2)O_(2)rarr Fe_(2)O_(3)" "xkJ//mol e 2Fe+O_(2) rarr 2FeO" " ykJ //mol e The DeltaH to form one mole of Fe_(3)O_(4) from Fe and O_(2) is :

GRB PUBLICATION-THERMODYNAMICS-All Questions
  1. C(2)H(6)(g)+3.5O(2)(g)to2CO(2)(g)+3H(2)O(g) DeltaS("vap")(H(2)O,l)=x...

    Text Solution

    |

  2. Consider the DeltaG(f)^(@) and DeltaH(f)^(@) (kJ//mol) for the followi...

    Text Solution

    |

  3. If DeltaG=-177 kcal for " "(1)2Fe(s)+(3)/(2)O(2)t...

    Text Solution

    |

  4. The bond dissociation energy of gaseous H(2),Cl(2) and HCl are 104,58,...

    Text Solution

    |

  5. In this reaction CS(2)(l)+3O(2)(g)toCO(2)(g)+2SO(2)(g) " ...

    Text Solution

    |

  6. The average O-H Bond energy in H(2)O with the help of following data :...

    Text Solution

    |

  7. Heat of hydronization of ethene is x(1) and that of benzene is x(2). H...

    Text Solution

    |

  8. From the following data , the enthalpy change for the sublimation of o...

    Text Solution

    |

  9. If S+O(2)toSO(2),DeltaH=-298.2 " kJ" " mole"^(-1) SO(2)+(1)/(2)O(2)t...

    Text Solution

    |

  10. The standerd enthalpy of formation of FeO and Fe(2)O(3) is -65 kcal "m...

    Text Solution

    |

  11. When a certain amount of ethylene was combusted, 6226 kJ heat was evol...

    Text Solution

    |

  12. Given the following reaction : P : N(2)(g)+2O(2)(g)to2NO(2)(g),Delta...

    Text Solution

    |

  13. Enthalpy of polymerisation of ethylene, as represented by the reaction...

    Text Solution

    |

  14. The heat of formation of HCl at 348 K from the following data will be ...

    Text Solution

    |

  15. The average Xe-F bond energy is 34Kcal//mol , first I.E. Of Xe is 279K...

    Text Solution

    |

  16. Reactions involving gold have been of particular intrests to alchemist...

    Text Solution

    |

  17. Enthalpy of neutralization of H(3)PO(3) "with " NaOH " is" -106.68 "kJ...

    Text Solution

    |

  18. The enthalpy of neutralisation of a weak acid in 1 M solution with a s...

    Text Solution

    |

  19. Combustion of sucrose is used by aerobic organisms for providing energ...

    Text Solution

    |

  20. The DeltaH(f)^(@) for CO(2)(g), CO(g) and H(2)O(g) are -395.5,-110.5 a...

    Text Solution

    |