Home
Class 12
CHEMISTRY
Given,{:(E(Fe^(3+) //Fe)^o + 3e Cr E^o ...

Given,`{:(E_(Fe^(3+) //Fe)^o + 3e Cr E^o =- 0.036 V),(E_(Fe^(3+) //Fe)^o =- 0.439 V):}`
The value of standard electrode ptoential for the charge,

A

`(-0.036 -0. 439) V`

B

`(- 0.36 + 0. 439) V`

C

`[3 (- 0.036) +2 (- 0.439) + 2(- 0.439)] V`

D

`[3 (-0.36) - 2 ( - 0. 439) ] V`

Text Solution

Verified by Experts

The correct Answer is:
D
`Fe^(3+) +3e rarr Fe" " DeltaG_1^0 =- 3 F^(-).36) V`
`Fe^(2+) +3e rarr Fe" " DeltaG_0^2 =- 3 F(-0.439) V`
` Fe^(3+) +3e rarr Fe^(2+)" " DeltaG_("net")^@ = DeltaG_1^@- DeltaG_2^@`
or `Delta _("net")^@ =- F (-0.36) -2n (-0.439)] V`
or ` S^@ = [(3 (-0. 36 ) -2 (-0.439)] V`.
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    A2Z|Exercise Section B - Assertion Reasoning|22 Videos

  • ELECTROCHEMISTRY

    A2Z|Exercise AIPMT/NEET Questions|35 Videos

  • ELECTROCHEMISTRY

    A2Z|Exercise Fuel Cell And Batteries|10 Videos

  • COORDINATION COMPOUNDS

    A2Z|Exercise Section D - Chapter End Test|30 Videos

  • GENERAL PRINCIPLES AND PROCESS OF ISOLATION OF METALS

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

Given, {:(E_(Fe^(3+) //Fe)^o + 3e E^o =- 0.036 V),(E_(Fe^(3+) //Fe)^o =- 0.439 V):} The value of standard electrode ptoential for the charge,

E_(Fe^(3+)//Fe)^(@)=-0.036V,E_(Fe^(2+)//Fe)^(@)=-0.0439V . The value of standard electrode potential for the change, Fe^(3+)(aq)+e^(-)toFe^(2+)(aq) will be

Given : E_(Fe^(3+)//Fe)^(@) = -0.036V, E_(FE^(2+)//Fe)^(@)= -0.439V . The value of electrode potential for the change, Fe_(aq)^(3+) + e^(-)rightarrow Fe^(2+) (aq) will be :

The standard reduction for the following reactions are : Fe^(3+) + 3e^(-) rarr Fe with E^(@) = - 0.036 V Fe^(2+) + 2e^(-) rarr Fe with E^(@) = - 0.44 V What would be the standard electrode potential for the reaction Fe^(3+) + e^(-) rarr Fe^(2+) ?

Given, standard electrode potentials, {:(Fe^(3+)+3e^(-) rarr Fe,,,E^(@) = -0.036 " volt"),(Fe^(2+)+2e^(-)rarr Fe,,,E^(@) = - 0.440 " volt"):} The standard electrode potential E^(@) for Fe^(3+) + e^(-) rarr Fe^(2+) is :

Given standard electode potenitals Fe^(2+) + 2e^(-) rarr Fe, E^@ =- 0. 44 V ………………(1) Fe^(3+) + 2e^(-) rarr Fe, E^@ =- 0. 036 V ………….(2) The standard electrode pptential E^@ for Fe^(2+) + e rarr Fe^(2+) is.

A2Z-ELECTROCHEMISTRY-Construction And Working Of A Cell, Electrochemical Series And Its Applications
  1. In which of the following electrochemical cell, overall cell reaction ...

    Text Solution

    |

  2. The standard emf of a cell having one electron change is found to be 0...

    Text Solution

    |

  3. Given,{:(E(Fe^(3+) //Fe)^o + 3e Cr E^o =- 0.036 V),(E(Fe^(3+) //Fe)^o...

    Text Solution

    |

  4. In a cell that untillizes the reaction , Zn((s)) + 2 H((aq))^+ rarr ...

    Text Solution

    |

  5. The thermodynamic efficiency of cell is given by

    Text Solution

    |

  6. The reaction 1//2H2(g)+AgCl(s) rarr H^(o+)(aq)+Cl^(c-)(aq)+Ag(s) oc...

    Text Solution

    |

  7. The reduction potential of a half-cell consisting of a Pt electrode im...

    Text Solution

    |

  8. The highest electrical conductivity of the following aqueous solutions...

    Text Solution

    |

  9. Given that E^@ (Zn^(2+) //Zn) =- 0.763 V and E^@ ( Cd^(2+) //Cd) = -0....

    Text Solution

    |

  10. A huydrgen electrode is dipped is a solution of pH = 3.0 at 25^@C The...

    Text Solution

    |

  11. Given standard electrode potentials Fe^(2+) + 2e^(-) rarr Fe, E^@ =...

    Text Solution

    |

  12. The cell , Zn | Zn^(2+) (1M) || Cu^(2+) (1M) Cu (E("cell")^@ = 1. 10 V...

    Text Solution

    |

  13. The correct representation of Nernsts equaion is .

    Text Solution

    |

  14. Given E(Cr^(3+)//cr)^@ =- 0.72 V, E(Fe^(2+)//Fe)^@ =- 0.42 V. The pote...

    Text Solution

    |

  15. The standard reduction potential for Cu^(2+)|Cu is +0.34V. Calculate t...

    Text Solution

    |

  16. The emf of the following three galvanic cells :1. Zn//Zn^(2+) ( 1M) ||...

    Text Solution

    |

  17. Cosoder the reactopm: (T = 298 K) Cl2 (g) + 2 BR^(-) (aq) rarr 2 Cl^...

    Text Solution

    |

  18. Given below are the half -cell reactions Mn^(2+) + 2e^(-) rarr Mn, E...

    Text Solution

    |

  19. The Gibbs energy for the decomposition of Al2 O3 at 2/3 Al2O3 rarr 4/...

    Text Solution

    |

  20. Which one of the following will increase the voltage of the cell ? (T...

    Text Solution

    |