Home
Class 12
CHEMISTRY
If E(Fe^(3+)//Fe)^(@) and E(Fe^(2+)//Fe)...

If `E_(Fe^(3+)//Fe)^(@)` and `E_(Fe^(2+)//Fe)^(@)` are `-0.36 V` and `0.439 V` respectively, then value of `E_(Fe^(3+)//Fe^(2+))^(@)` is

A

`(-0.036- 0. 439) V`

B

`[ 3 ( -0. 36) + 2 ( - 0. 439) ]V`

C

`(-0. 36 - 0. 439) V`

D

`[3 (0. 36) - 2 ( - 0. 439) ]V`

Text Solution

Verified by Experts

The correct Answer is:
D
Given that , `E _( Fe ^(2+) //Fe) ^(@) = - 0. 36V ,`
`E _(Fe ^(2+) // Fe ) ^(@) =- 0. 439 V`
`Fe ^(3+) + 3e ^(-) to Fe , Delta G _(1) =0 3 F ( E _(Fe ^( 3+ ) // Fe ))`
`Fe ^( 2+) + 2e ^(-) to Fe , Delta G _(2) =- 2 F ( E _(Fe ^(2+)//Fe)^(@))`
`Fe ^(3+) + e ^(-) to Fe ^(2+) , Delta G _(3) =- F ( E _(Fe ^(2+) //Fe) ^(@))`
`E _(Fe ^(3+) // Fe ^(2+)) ^(@) = 3 F _(Fe ^(3+) // Fe ) ^(@) - 2 E _(Fe ^(2+) //Fe) ^(@)`
`= [ 3 ( - 0. 36) - 2 ( -0.439) ]V`
Promotional Banner

Topper's Solved these Questions

  • QUESTION-PAPERS-2012

    BITSAT GUIDE|Exercise Chemistry (Single correct answer type:)|40 Videos

  • QUESTION-PAPERS-2014

    BITSAT GUIDE|Exercise CHEMISTRY|40 Videos

Similar Questions

Explore conceptually related problems

Given the E_(Fe^(3+)//Fe)^(@) and E_(Fe^(2+)//Fe)^(@) are -0.36 V and 0.-439 V , respectively. The value of E_(Fe^(3+)//Fe^(2+)) ^(@) would be :

Given that E_(Fe^(3+)|Fe)^(0) and E_(Fe^(2+)|Fe)^(0) are -36V and -0.439V , respectively . The value of E_(Fe^(3+),Fe^(2+)|Pt)^(0) would be

If E^(c-)._(Fe^(3+)|Fe) and E^(c-)._(Fe^(2+)|Fe) are =-0.36 V and -0.439V , respectively, then the value of E^(c-)._(Fe^(3+)|Fe^(2+))

The standard electrode potentials, E^(@) of Fe^(3+)//Fe^(2+) and Fe^(2+)//Fe at 300 K are +0.77 V and -0.44V , respectively, The E^(@) of Fe^(3+)//Fe) at the same temperature is:

The standard electrode potentials, E^(@) of Fe^(3+)//Fe^(2+) and Fe^(2+)//Fe at 300 K are +0.77V and -0.44V , respectively. The E^(@) of Fe^(3+)//Fe at the same temperature is

If E_(Fe^(2+)//Fe)^(@)=-0.440 V and E_(Fe^(3+)//Fe^(2+))^(@)=0.770 V , then E_(Fe^(3+)//Fe)^(@) is -

BITSAT GUIDE-QUESTION-PAPERS-2013-Chemistry
  1. Salt A+SrarrBoverset(BaCl(2))rarr White precipitate A is paramagnetic ...

    Text Solution

    |

  2. equal volume each of two sols of Agl, one obtained by adding AgNO(3) t...

    Text Solution

    |

  3. In the extraction of Ag, Zn is removed from (Zn-Ag) alloy through

    Text Solution

    |

  4. A reaction takes place in three steps. The rate constant are k(1), k(2...

    Text Solution

    |

  5. If E(Fe^(3+)//Fe)^(@) and E(Fe^(2+)//Fe)^(@) are -0.36 V and 0.439 V r...

    Text Solution

    |

  6. KCl crystallises in the same type of lattice as does NaCl Given that r...

    Text Solution

    |

  7. The compound formed as a result of oxidation of propyl benzene by KMnO...

    Text Solution

    |

  8. Which of the following is an outer d-orbital or high spin complex ?

    Text Solution

    |

  9. The monosaccharide having anomeric carbon atoms are

    Text Solution

    |

  10. Primary amine is not formed in the reaction of I. hydrolysis of RCN...

    Text Solution

    |

  11. In vulcanization of rubber:

    Text Solution

    |

  12. What will be the correct structural formula of product for the followi...

    Text Solution

    |

  13. What will be the correct relation between products when 2-methyl cyclo...

    Text Solution

    |

  14. The equilibrium constant K(p), for the reaction N(2)(g)+3H(2)(g) hArr ...

    Text Solution

    |

  15. At 27^(@)C, K(p) value for the reaction CaCO(3)(s) hArr CaO (s) + CO...

    Text Solution

    |

  16. At constant TandP,Which of the following statements is correct for the...

    Text Solution

    |

  17. IUPAC name and degree of unsaturation of compound X is

    Text Solution

    |

  18. The average oxidation state of sulphur in Na(2)S(4)O(6) is

    Text Solution

    |

  19. Which of the following antibiotics contain nitro group attached to aro...

    Text Solution

    |

  20. The behavior of the gas becomes more ideal at I. Very low pressure ...

    Text Solution

    |