Home
Class 12
CHEMISTRY
The standard reduction potential for Fe^...

The standard reduction potential for `Fe^(2+) //Fe` and `Sn^(2+) //Sn` electrodes are `-0.44` and `-0.14 ` volt respectively. For the given cell reaction `Fe^(2+) + Sn rarr Fe + Sn^(2+) `, the standard ` EMF` is.

A

` +.030 V`

B

`-0.58 V`

C

` +0. 58 V`

D

` -0. 30 V`

Text Solution

Verified by Experts

The correct Answer is:
D
For the cell reaction. Fe acts as cathode and Sn as anode, Hence,
`E_(cell)^2 -E_("cathode")^2 -E_("anode")^@ =- 0.44-(-0.14) =- 0.30 V`
The negative EMF suggests that the reaction goes spontaneously in reversed direction.
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    A2Z|Exercise Assertion-Reasoning Questions|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

E^(o) ""_(RP)" for " Fe^(+2)//Fe and Sn^(+2)//Sn electrodes are - 0.75 and - 0.45 volt respectively. The standard emf for cell F^(+2)+Sn rarr Sn^(+2) + Fe is :

Standard reduction potential of Au^(3+)//Au and Sn^(4+)//Sn^(2+) electrodes are 1.5 V and 0.15 V respectively. The net reaction 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

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 (reduction) of Pt//Fe^(3+),Fe^(+2) and Pt//Sn^(4+),Sn^(+2) are +0.77V and 0.15V respectively at 25^(@)C . The standard EMF of the reaction Sn^(4+) +2Fe^(2+) rarr Sn^(2+) +2Fe^(3+) is

The standard electrode potentials for the reactions, Ag^(+) (a.q) + e^(-) rarr Ag (s) Sn^(2+) (a.q) + 2e^(-) rarr Sn (s) at 25^(@)C are 0.80 volt and -0.14 volt respectively. The emf of the cell Sn|Sn^(2+) (1M)|| Ag^(+) (1M) | Ag is:

A2Z-ELECTROCHEMISTRY-Section D - Chapter End Test
  1. A solution containing one mole per litre of each Cu(NO(3))(2), AgNO(3)...

    Text Solution

    |

  2. When a copper wire is placed I a solution of AgNO3, the solution acqu...

    Text Solution

    |

  3. The standard reduction potential for Fe^(2+) //Fe and Sn^(2+) //Sn ele...

    Text Solution

    |

  4. For the redox change , Zn(s) + underset (0.1M)FuCu^2+ rarr underset...

    Text Solution

    |

  5. Standared reduction electrode potenitals of three metals A, B and C ...

    Text Solution

    |

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

    Text Solution

    |

  7. For the electrochemical cell, (M|M^(o+))||(X^(c-)|X), E^(c-).((M^(o+)|...

    Text Solution

    |

  8. Given : (i) CU^(2+) + 2e^- rarr Cu, E^@ = 0.337 V (ii) Cu^(2+) +e...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  11. The mass of copper deposited from a solution of CuSO4 by passage of 45...

    Text Solution

    |

  12. A solution of a salt of a metal was electrolysed for 150 minutes wit...

    Text Solution

    |

  13. The resistance of 0. 01 N NaCl solution at 25^@C is 200 Omega . Cell c...

    Text Solution

    |

  14. The metal that cannot obtained by electrolysis of an aqueous solution ...

    Text Solution

    |

  15. When the sample of copper with zinc impurityn is to be purified by ele...

    Text Solution

    |

  16. In an electrolytic cell, the flow of electrons is form

    Text Solution

    |

  17. A solution of sodium sulphate in qater is electrolysed using inert ele...

    Text Solution

    |

  18. Which of the following liberate hydrogen on reaction with dilute H2 SO...

    Text Solution

    |

  19. When during electrolusis of a solution of AgNO3, 9650 coulmbs of char...

    Text Solution

    |

  20. These question consist of two statements each, printed as Assertion an...

    Text Solution

    |