Home
Class 12
CHEMISTRY
We have an oxidation -reduction system: ...

We have an oxidation -reduction system:
`[Fe(CN)_6]^(3-) +e leftrightarrow [Fe(CN)_6]^(4-), E^@=+0.36V`
At what ratio of the concentrations of the oxidised and reduced forms will the potential of the system be 0.28V?

Text Solution

Verified by Experts

0.044
Promotional Banner

Topper's Solved these Questions

  • ELECTROMOTIVE FORCE

    BODY BOOKS PUBLICATION|Exercise EXERCISE |25 Videos

  • ELECTROMOTIVE FORCE

    BODY BOOKS PUBLICATION|Exercise EXERCISE |25 Videos

  • ELECTROCHEMISTRY

    BODY BOOKS PUBLICATION|Exercise EXAMPLES|134 Videos

  • General Principles and Processes of Isolation of Elements

    BODY BOOKS PUBLICATION|Exercise Example|108 Videos

Similar Questions

Explore conceptually related problems

Identify the oxidant and reductant in the following reaction: 2K_4[Fe(CN)_6](aq) + H_2O_2(aq) rarr 2K_3[Fe(CN)_6](aq) + 2KOH (aq)

Iodine (I_2) and Bromine (Br_2) are added to a solution containing iodine I^- and bromide Br^- ions. What reaction would occur if the concentration of each species is 1M. The electrode potentials for the reactions are E^circ (I_(2)//I^(-))= 0.54 V , E^circ(Br_(2)//Br^(-))=1.08 V

Given that Fe^(3+)+e leftrightarrow Fe^(2+), E^@=0.77V Fe^(2+)+2e leftrightarrow Fe, E^@=-0.44V What will be the E^@ value for the following half cell. Fe^(3+)+ 3e leftrightarrow Fe

Assertion : [Fe(CN)_6]^(3-) is weakly paramagnetic while [Fe(CN)_6]^(4-) is diamagnetic. Reason : [Fe(CN)_6]^(3-) has +3 oxidation state while [Fe(CN)_6]^(4-) has +2 oxidation state.

With the help of valence bond theory answer the following questions related to the complexes. [Fe (CN)_6]^(4-), [Fe (CN)_6]^(3-) and [CoF_6p]^(3-) :- Which among these form outer orbital complex ?

Consider the circle x^2+y^2-4x-6y-3 = 0 .What is the general form of the equation of a circle concentric with the given circle?

The cell in which the following reaction occurs 2Fe^(3+)(aq)+2I-(aq) to 2Fe^(2+)(aq) + I_2(s) has E_(cell)^0 = 0.236V at 298 K. Calculate the standard Gibbs energy and equilibrium constant of the cell reaction

The standard reduction potential for the half cell NO_j^-(aq)+2 H^+(aq)+e^- NO_2(~g)+H_2 O is 0.78 ~V 1). Calculate the reduction potential in ' 8 MH^* ii) What will be the' reduction potential of the half cell in a neutral solution. "Assume all the other species to be at unit concentration.

BODY BOOKS PUBLICATION-ELECTROMOTIVE FORCE -PROBLEMS
  1. The emf of a cell consisting of a copper and a lead electrode immersed...

    Text Solution

    |

  2. What is the potential of a hydrogen electrode at pH=10?

    Text Solution

    |

  3. We have an oxidation -reduction system: [Fe(CN)6]^(3-) +e leftrighta...

    Text Solution

    |

  4. Calculate the emf of the following cell at 25^@C Fe|FeSO4||CuSO4|Cu ...

    Text Solution

    |

  5. Calculate the emf of the following cells, find their cells reactions u...

    Text Solution

    |

  6. Calculate the emf of the following cells, find their cells reactions u...

    Text Solution

    |

  7. Calculate the emf of the following cells, find their cells reactions u...

    Text Solution

    |

  8. Neglecting the liquid junction potential, calculate the emf of the fol...

    Text Solution

    |

  9. The emf of the cell, (Pt) H2|H^+ (c=unknown) ||KCN soln. |HgCl2|Hg i...

    Text Solution

    |

  10. Calculate the cell potential for the following galvanic cell: The f...

    Text Solution

    |

  11. Find the equilibrium constant at 25^@C for the reaction, Hg2(NO3)2+2...

    Text Solution

    |

  12. Calculate the potential of a silver electrode in a saturated solution ...

    Text Solution

    |

  13. Calculate the potential of a cell in which hydrogen electrode is immer...

    Text Solution

    |

  14. A galvanic cell is constructed of two hydrogen electrodes, one immerse...

    Text Solution

    |

  15. Using the electrochemical series table, explain why Cu (I) sulphate do...

    Text Solution

    |

  16. For the cell (Pt) H2 (1atm) |H^+ (pH unknown) ||H^+6 (pH=1)|H2 (1atm...

    Text Solution

    |

  17. Write the cell reaction and calculate the potential of the cell, Cl2...

    Text Solution

    |

  18. The emf of a galvanic cell composed of two hydrogen electrodes is 272m...

    Text Solution

    |

  19. Calculate the standard emf, standard free energy charge and equilibriu...

    Text Solution

    |

  20. What must be the pressure of the fluorine gas to produce a reduction m...

    Text Solution

    |