Home
Class 12
CHEMISTRY
E^@ for Fe^(2+) +2e rarrFe is -0.44 volt...

`E^@ `for `Fe^(2+) +2e rarrFe` is -0.44 volt and `E^@` for `Zn^(2+) +2e rarrZn` is `-0.76` volt thus:

A

Zn is more electropositive than Fe

B

Fe is more electropositive than Zn

C

Zn is more electronegative

D

None

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • COORDINATION COMPOUNDS

    MBD PUBLICATION|Exercise QUESTION BANK|914 Videos

  • ENVIRONMENTAL CHEMISTRY

    MBD PUBLICATION|Exercise QUESTION BANK|299 Videos

Similar Questions

Explore conceptually related problems

Iron may be protected from rusting by coating with zinc or tin. By referring to the data given below, explain why zinc protect iron more effectively than tin? Zn^(2+) + 2e^(-) rarr Zn, E^(@) = - 0.76 V Fe^(2+) + 2e^(-) rarr Fe, E^(@) = - 0.44V Sn^(2+) + 2e^(-) rarr Sn , E^(@) = - 0.14V

E^(@) values for Fe^(3+) + 3e rarr Fe and Fe^(2+) + 2 e rarr Fe are - 0.036V and -0.44V respectively. Calculate the E^(0) and DeltaG^(0) for the cell reaction Fe + 2 Fe^(3+) rarr 3Fe^(2+) .

In a cell Zn[Zn^(2+) (aq)(1.0 M)][Cu^(2+) (aq)(1.0M]Cu , the standard reduction potentials are : Cu^(2+) +2e^- rarrCu,E^@ =0.350 V and Zn^(2+) +2e^-rarrZn,E^@=-0.763V. What is the e.m.f.of the cell ?

Standard E^@ of the half cell Fe/ Fe^(2+) is +0.44V and standard E^@ of half cell Cu / Cu^(2+) is -0.32V then:

In a cell Zn | Zn^++ (eq) || Cu^+2 (eq) | Cu the standard electrode potentials are : Cu^++ + 2e rarr Cu, E^@ = 0.34 V , Zn^++ + 2e rarr Zn, E^@ = -0.76 V .What is the emf of the cell ?

Consider the standard potential of the following cells, (i) Mg^(2+) +2e rarr Mg,E^@=-2.37V (ii) Zn^(2+) + 2erarrZn,E^@ =-0.76V (iii) Ni^(2+) +2e rarrNi,E^@=-0.25V (iv) Fe^(3+) + 3e rarrFe, E_0=-0.04 V find the strongest reducing agent :

MBD PUBLICATION-ELECTROCHEMISTRY-QUESTION BANK
  1. Which defines the standard reduction electrode potential of Zn^(2+) io...

    Text Solution

    |

  2. In which cell, electrical energy is converted into chemical energy:

    Text Solution

    |

  3. E^@ for Fe^(2+) +2e rarrFe is -0.44 volt and E^@ for Zn^(2+) +2e rarrZ...

    Text Solution

    |

  4. In a galvanic cell, which is wrong :

    Text Solution

    |

  5. Using same quantity of current , which among Na, Mg and AI is deposite...

    Text Solution

    |

  6. A metal having negative reduciton potential when dipped in the solutio...

    Text Solution

    |

  7. In electrochemical corrosion of metals, the metal undergoing corrosion...

    Text Solution

    |

  8. The metal which cannot liberate H2 from hydrochloric acid is :

    Text Solution

    |

  9. KCl (aq) cannot be used as a salt bridge for the cell Cu(s)|CuSO4(aq)|...

    Text Solution

    |

  10. The calomel electrode is reversible with respect to:

    Text Solution

    |

  11. Standard reduction potential of an element is equal to:

    Text Solution

    |

  12. Beryllium is placed above magnesium in the II group. Beryllium dust, t...

    Text Solution

    |

  13. For the cell Zn|Zn^(2+)||Cu^(2+)|Cu if the concentration of Zn^(2+) an...

    Text Solution

    |

  14. Copper can be deposited from acidified copper sulphate and alkaline cu...

    Text Solution

    |

  15. A cell necessarily does not contain:

    Text Solution

    |

  16. Lithium is generally used as an electrode in high energy density batte...

    Text Solution

    |

  17. Cu (II) sulphate solution is treated separately with KCl and KI In whi...

    Text Solution

    |

  18. Which process occurs in the electrolysis of aqueous solution of nickel...

    Text Solution

    |

  19. In aqueous solution, weak electrolytes dissociates:

    Text Solution

    |

  20. Which reaction does not takes place at cathode ?

    Text Solution

    |