Home
Class 12
CHEMISTRY
The standard oxidation potentials of Zn ...

The standard oxidation potentials of Zn and Ag in water at `25^@ C` are.
`Zn(s)rarrZn^(2+) =2e,E^@=0.76V`
`Ag(s) rarrAg^+ +e,E^@=-0.80V`
Which reaction actually takes place:

A

`Zn(s) +2Ag^+(aq)rarrZn^(2+)(aq)+2Ag(s)`

B

`Zn^(2+)(aq) +2Ag(s) rarr2Ag^+(aq)+Zn(s)`

C

`Zn(s) +2Ag(s) rarrZn^(2+)(aq)+Ag^+(aq)`

D

`Zn^(2+)(aq)+Ag^+(aq) rarrZn(s) +Ag(s)`

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

The standard oxidation potentials, E^@ for the half reactions are : ZnrarrZn^(2+) +2e ,E^@=+0.76V Ag rarr Ag^+ +e,E^@=-0.77V The standard emf of the cell, Ag^+ +Zn rarrZn^(2+)+Ag is :

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 :

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. Indicator electrode is :

    Text Solution

    |

  2. When Zn piece is kept inCuSO4 solution copper gets prectipitated becau...

    Text Solution

    |

  3. The standard oxidation potentials of Zn and Ag in water at 25^@ C are....

    Text Solution

    |

  4. The standard reduction potentials of the elemtnts A, B.Care +2.37V,-1....

    Text Solution

    |

  5. Is the reaction, 2Al +3Fe^(2+)rarr2Al^(3+) +3Fe possible?

    Text Solution

    |

  6. Whether tin can displace lead from aqueous lead bromide solution:

    Text Solution

    |

  7. Faraday is equal to :

    Text Solution

    |

  8. More electropositive elements have :

    Text Solution

    |

  9. Based on the data given below , the correct order of reducing power is...

    Text Solution

    |

  10. Galvanised iron sheets have coating of :

    Text Solution

    |

  11. The electrochemical that is easiest to be reduced is :

    Text Solution

    |

  12. An electrochemical cell consists of :

    Text Solution

    |

  13. The correct order of chemical reactivity with water according to elect...

    Text Solution

    |

  14. Which graph correctly correlates E(cell) as a function of concentratio...

    Text Solution

    |

  15. Faraday.s laws hold good at:

    Text Solution

    |

  16. The main function of the salt bridge is:

    Text Solution

    |

  17. A substance that will reduce Ag^+ to Ag but will not reduce Ni^(2+) to...

    Text Solution

    |

  18. A dilute aqueous solution of Li2SO4 is electrolysed . The products for...

    Text Solution

    |

  19. Blocks of magnesium metal are often strapped to the steel hulls of oce...

    Text Solution

    |

  20. Which statement is true about spontaneous cell reaction in galvanic ce...

    Text Solution

    |