Home
Class 12
CHEMISTRY
The reduction potentials of Zn, Cu, Ag, ...

The reduction potentials of Zn, Cu, Ag, `H_(2)` and Ni are -0.76, +0.34, +0.80, 0.00 and -0.25 respectively. Which of the following reaction will provide maximum voltage ?

A

`2Zn(s)+2Cu^(2+)(aq) rarr 2Zn^(2+) (aq)+2Cu(s)`

B

`1//2Zn(s)+Ag^(+) (aq) rarr 1//2 Zn^(2+)(aq)+Ag(s)`

C

`H_(2)(g)+Cu^(2+)(aq) rarr 2H^(+)(aq)+Cu(s)`

D

`2Ni(s)+2H^(+)(aq)rarr Ni^(2+)(aq)+H_(2)(g)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    MODERN PUBLICATION|Exercise Multiple Choice Questions (Level-II)|66 Videos

  • ELECTROCHEMISTRY

    MODERN PUBLICATION|Exercise Multiple Choice Questions (Level-III) (Questions from AIEEE/JEE Examinations)|10 Videos

  • COORDINATION COMPOUNDS

    MODERN PUBLICATION|Exercise Recent Examination Questions|21 Videos

  • ENVIROMENTAL POLLUTION

    MODERN PUBLICATION|Exercise RECENT EXAMINATION QUESTIOS|2 Videos

Similar Questions

Explore conceptually related problems

The standard oxidation potentials of Zn, Cu, Ag and Ni electrodes are +0.76,-0.34,-0.80 and +0.25 V respectively . Which of the following reaction will provide maximum voltage ?

The standard reduction potential of Ag, Cu and Zn are 0.80 V, 0.34 V and - 0.76 V respectively . Which one of the following can be stored ?

The standard reduction potentials of zinc and silver are - 0.76 and 0.8 V respectively. Which of the following reactions actually occurs ?

The oxidation potentials of Zn, Mg, Ni and Cu are 0.76, 2.37, 2.25 and -0.34 V respectively. Which of these will not be capable of liberating H_(2) from 1 M HCl ?

Standard reduction potentials of three metals electrodes A,B, and C are 0.34V,-0.40V and -0.47V respectively . Which is the best reducing agent ?

The standard electrode potential of Zn^(2+)|ZnandCu^(2+)|Cu are - 0.76 and 0.34 V respectively . The standard e.m.f. of the cell is :

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 :

The standard reduction potentials for Cu^(2+)//Cu, Zn^(2+)//Zn, Li^(+)//Li, Ag^(+)//Ag and H^(+)//H_(2) are 0.34V, -0.762V, -3.05V, +0.80V and 0.00 V respectively . Choose the strongest reducting agent among the following

MODERN PUBLICATION-ELECTROCHEMISTRY-Recent Examination Questions
  1. The reduction potentials of Zn, Cu, Ag, H(2) and Ni are -0.76, +0.34, ...

    Text Solution

    |

  2. In the electrolysis of acidulated water, it is desired to obtain 1.12 ...

    Text Solution

    |

  3. The one which decreases with dilution is

    Text Solution

    |

  4. The standard electrode potentials E^(@) for the half cell reactions ar...

    Text Solution

    |

  5. 9.65C of electric current is passed through fused anhydrous magnesium ...

    Text Solution

    |

  6. The standard emf of galvanic cell involving 3 moles of electrons in it...

    Text Solution

    |

  7. E(1), E(2) and E(3) are the emf values of the three galvanic cells res...

    Text Solution

    |

  8. The approximate time duration in hours to electroplate 30 g of calcium...

    Text Solution

    |

  9. Which one of the following has a potential more than zero ?

    Text Solution

    |

  10. The emf of a galvanic cell constituted with the electrodes Zn^(2+)"|"Z...

    Text Solution

    |

  11. Conductivity of a saturated solution of a sparingly soluble salt AB at...

    Text Solution

    |

  12. For Cr2O7^(2-) + 14 H^(+) + 6e^(-) to 2Cr^(+3) + 7H2O, E^(@) = 1.33 V ...

    Text Solution

    |

  13. In H2-O2 fuel cell the reaction occurring at cathode is

    Text Solution

    |

  14. How many coulombs of electricity are required for the oxidation of one...

    Text Solution

    |

  15. The standard electrode potential for Daniel cell is 1.1 volt. What is ...

    Text Solution

    |

  16. The cathode reaction in the dry cell will be :

    Text Solution

    |

  17. Lambda(m)^(@) for NH(4)Cl, NaOH and NaCl are 130, 248 and 126.5 "ohm"^...

    Text Solution

    |

  18. Strongest reducing agent among the following is : (i) Na^(+)+e^(-) ...

    Text Solution

    |