Home
Class 12
CHEMISTRY
The standard reduction potential of some...

The standard reduction potential of some electrodes are,E°(`K^(+)` / `K`)=-2.9 V , E°(`Zn^(2+)` / `Zn`)=-0.76 V , E°(`H^(+)`/`H_(2)`)=-0.00 V , E°(`Cu^(2+)` / `Cu`)=+0.34 V.The strongest oxidant is:

A

Copper

B

Zinc

C

Hydrogen

D

`Cu^(2+)`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • D-AND F-BLOCK ELEMENTS

    MODERN PUBLICATION|Exercise EXERCISE|291 Videos

  • GENERAL PRINCIPLE OF ISOLATION OF ELEMENTS

    MODERN PUBLICATION|Exercise EXERCISE|190 Videos

Similar Questions

Explore conceptually related problems

Copper from copper sulphate solution can be displaced by ………….The standared reduction potentials of some electrodes are given below: E^@(Fe^(2+),Fe) =-0.44V E^@(Zn^(2+),Zn)=-0.76 V E^@(Cu^(2+),Cu) =+0.34V E^@(Cr^(3+),Cr)=-0.74V E^@(H^+,1/2 H_2)=-0.00 V

The reduction electrode potential E of 0.1 M solution of M^+ ions (E^o(rp) = -2.36V ) is :

Given the standard electrode potentials, K^(+) // K = - 2.93 V, Ag^(2+) //Ag = 0.80 V Hg^(2+) //Hg = 0.79 V , Mg^(2+) //Mg = - 2.37 V, Cr^(3+) //Cr = - 0.74 V Arrange these metals in their increasing order of reducing power.

The standard cell potential for the cell is , Zn|Zn^(2+)(1M)||Cu^(2+)(1M)|Cu [E^@ for Zn^(2+)//Zn=-0.76V, E^@ for Cu^(2+)//Cu=+0.34V]

The standard reduction potential at 290K for the following half reactions are, (i) Zn^(2+) +2e rarrZn(s),E^@ =-0.762 V (ii) Cr^(3+) +3e rarr Cr(s), E^@=-0.740 V (iii) 2H^+ 2e rarrH_2(g),E^@=-0.000V (iv) Fe^(3+) +e rarr Fe^2+,E^@=+0.77V Which it the strongest reducing agent :

MODERN PUBLICATION-ELECTROCHEMISTRY-EXERCISE
  1. Which one is correct:

    Text Solution

    |

  2. An unit of charge is :

    Text Solution

    |

  3. The standard reduction potential of some electrodes are,E°(K^(+) / K)=...

    Text Solution

    |

  4. In galvanic cell,the salt bridge is used to:

    Text Solution

    |

  5. A current of 2 ampere was passed through solution of CuSO4 and AgNO3 i...

    Text Solution

    |

  6. The emf of the cell involving following changes Zn(s)+Ni^(2+)(1M)rarrZ...

    Text Solution

    |

  7. A current of 2.6 ampere was passed through CuSO4 solution for 380 sec....

    Text Solution

    |

  8. E^(@) values of Mg^(2+) //Mg is -2.37V, of Zn^(2+)//Zn is -0.76V and F...

    Text Solution

    |

  9. On passing electricity through dilute H(2)SO(4) solution the amount o...

    Text Solution

    |

  10. Passage of 96500 coulmb of electricity liberates…….. Litre of O2 at NT...

    Text Solution

    |

  11. During electrolysis of an aqueous solution of Cu^(2+) sulphate , 0.635...

    Text Solution

    |

  12. The number of electrons involved in redox reactions when 1 faraday of...

    Text Solution

    |

  13. If Mg^(2+)+2e to Mg(s), E=-2.37V , Cu^(2+)+2e to Cu(s), E=.+0.34V ? Wr...

    Text Solution

    |

  14. A certain quantity of electricity is passed through aqueous solution o...

    Text Solution

    |

  15. Which of the following statement is wrong ?

    Text Solution

    |

  16. When same quantity of current is passed through two different electrol...

    Text Solution

    |

  17. The unit of electrochemical equivalent is :

    Text Solution

    |

  18. A current of 0.75A is passed through an acidic CuSO4 for 10 min. the v...

    Text Solution

    |

  19. The best conductor of electricity is a 1M solution of

    Text Solution

    |

  20. Which will be decomposed when electric current is passed through its a...

    Text Solution

    |