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

`+0.30V`

B

`-0.58V`

C

`+0.58V`

D

`-0.30V`

Text Solution

Verified by Experts

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

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    ERRORLESS |Exercise Jee Section (More than one choice correct answer)|10 Videos

  • ELECTROCHEMISTRY

    ERRORLESS |Exercise Jee Section (Reasoning type question)|3 Videos

  • ELECTROCHEMISTRY

    ERRORLESS |Exercise Critical Thinking Objective Question|16 Videos

  • D & P-BLOCK ELEMENTS

    ERRORLESS |Exercise JEE Section (Numeric answer type questions)|2 Videos

  • ENVIRONMENTAL CHEMISTRY

    ERRORLESS |Exercise CRITICAL THINKING (Objective question )|16 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:

Given that the standard reduction potentials E ^(0) of Fe^(+2)|Feis 0.26V and Fe ^(+3) |Fe is 0.76V respectively. The E ^(@)of Fe ^(+2)|Fe^(+3) is:

ERRORLESS -ELECTROCHEMISTRY-Jee Section (Only one choice correct answer)
  1. When a copper wire is placed I a solution of AgNO3, the solution acqu...

    Text Solution

    |

  2. Which one of the following metals can not be obtained on electrolysis ...

    Text Solution

    |

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

    Text Solution

    |

  4. Cu^(+) ion is not stable in aqueous solution because because of dispro...

    Text Solution

    |

  5. The requrierd charege for one equivalent weifht of silver deposited on...

    Text Solution

    |

  6. A dilute aqueous solution of Na(2)SO(4) is electrolyzed using platinum...

    Text Solution

    |

  7. The standard reduction potentials of Cu^(2+)|Cu and Cu^(2+)|Cu^(o+) ar...

    Text Solution

    |

  8. A standard hydrogen electrode has zero electrode potential because :

    Text Solution

    |

  9. The standard reduction potential values of three metallic cations, X,Y...

    Text Solution

    |

  10. The emf of the cell in which the following reactions, Zn(s)+Ni^(2+) ...

    Text Solution

    |

  11. A gas X at 1 atm is bubbled through a solution containing a mixture of...

    Text Solution

    |

  12. For a cell reaction involvinig a two electron change, the standard emf...

    Text Solution

    |

  13. For the electrochemical cell (M|M^(+))|| (X^(-)|X) E^(@) (M^(+)//M) =...

    Text Solution

    |

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

    Text Solution

    |

  15. A galvanic cell is set up from a zinc bar weighing 50g and 1.0 litre, ...

    Text Solution

    |

  16. Saturated solution of KNO3 is used to make "salt bridge" because .

    Text Solution

    |

  17. The correct order of equivalent conductance at infinite dilution of Li...

    Text Solution

    |

  18. Standard electrode potential data are useful for understanding the sui...

    Text Solution

    |

  19. In the electrolytic cell, flow of electrons is form :

    Text Solution

    |

  20. The emf of the cell, Zn|Zn^(2+)(0.01M)|| Fe^(2+)(0.001M) | Fe at 2...

    Text Solution

    |