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

The standard reduction potential for `Zn^(2+)//Zn, Ni^(2+)//Ni` and `Fe^(2+)//Fe` are `-0.76, -0.23` and `-0.44V` respectively. The reaction `X + Y^(2) rarr X^(2+) + Y` will be spontaneous when:

A

X=Ni, Y=Fe

B

X=Ni, Y=Zn

C

X=Fe, Y=Zn

D

X=Zn , Y=Ni

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    TARGET PUBLICATION|Exercise EVALUATION TEST|19 Videos

  • ELECTROCHEMISTRY

    TARGET PUBLICATION|Exercise CRITICAL THINKING|76 Videos

  • D AND F-BLOCK ELEMENT

    TARGET PUBLICATION|Exercise EVALUATION TEST|15 Videos

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    TARGET PUBLICATION|Exercise Evaluation Thinking|15 Videos

Similar Questions

Explore conceptually related problems

The standard reduction potentials for Zn^(2+)//Zn,Ni^(2+)//Ni and Fe^(2+)//Fe are -0.76,-0.23 and -0.44V respectively. The reaction X+Y^(2+)to X^(2)+Y will be spontaneous when :

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.

Standard reduction electrode potential of Zn^(2+)//Zn is -0.76V . This means:

TARGET PUBLICATION-ELECTROCHEMISTRY-COMPETITIVE THINKING
  1. What is the density of solution of sulphuric acid used as an electroly...

    Text Solution

    |

  2. Which among the following equations represents the reduction reaction ...

    Text Solution

    |

  3. In lead storage battery, the anode reaction is

    Text Solution

    |

  4. While charging the lead storage battery:

    Text Solution

    |

  5. Which of the following is NOT used in hydrogen-oxygen fuel cell ?

    Text Solution

    |

  6. In H(2)-O(2) fuel cell, the reaction occurring at cathode is

    Text Solution

    |

  7. Which of the following reaction is reaction is used to make a fuel cel...

    Text Solution

    |

  8. A device that convers energy of combustion of fueles like hydrogen and...

    Text Solution

    |

  9. Identify the weakest oxidising agent among the following.

    Text Solution

    |

  10. Reduction potentials of A,B,C and D are 0.8 V 0.79 V, 0.34 V and -2.3...

    Text Solution

    |

  11. Reducing powers of A,B,C and D are w,x,y, and z respectively such that...

    Text Solution

    |

  12. The value of E(red)^(@) for metals A,B and are 0.34 Volt , -0.80 Volt...

    Text Solution

    |

  13. The standard reduction potential for Zn^(2+)//Zn, Ni^(2+)//Ni and Fe^(...

    Text Solution

    |

  14. The E(M^(3+)//M^(2+)^@ values for Cr, Mn, Fe and Co are 0.41, + 1....

    Text Solution

    |

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

    Text Solution

    |

  16. The standard oxidation potential values of A,B,C and D are -0.03 V, +0...

    Text Solution

    |

  17. This is involved in rusting of Fe :.

    Text Solution

    |

  18. DUring galvanisation of iron, which metal is used for coating iron sur...

    Text Solution

    |

  19. Zine can be coated on iron to produce galvanize3d iron but the reverse...

    Text Solution

    |

  20. The process in which metal surface is made inactive is called

    Text Solution

    |