Home
Class 12
CHEMISTRY
At 20^(@) C, the standard oxidation pote...

At `20^(@)` C, the standard oxidation potential of Zn and Ag in water are:
`Zn(s)rarr Zn^(2+) (aq) + 2e^(-), E^(o) = 0.76V`,
`Ag(s) rarr Ag^(+)(aq) + E^(-) , E^(o) = - 0.80 V`
The standard EMF of the given reaction is:
`Zn+2Ag^(+)rarr 2AG+Zn^(+2)`

A

`-1.56`V

B

`+1.56`V

C

`-0.04`V

D

`0.04` V

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    VMC MODULES ENGLISH|Exercise EFFICIENT|46 Videos
  • ELECTROCHEMISTRY

    VMC MODULES ENGLISH|Exercise IMPECCABLE|50 Videos
  • ELECTROCHEMISTRY

    VMC MODULES ENGLISH|Exercise FUNDAMENTAL|50 Videos
  • CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES

    VMC MODULES ENGLISH|Exercise JEE ADVANCE (ARCHIVE)|30 Videos
  • ENVIRONMENTAL CHEMISTRY

    VMC MODULES ENGLISH|Exercise JEE Main (Archive)|39 Videos

Similar Questions

Explore conceptually related problems

The standard oxidation potential of Zn and Ag in water at 20^(@) C" are: " Zn(s) rarr Azn^(2+) (aq) + 2e^(-) E^(o) = 0.76 V Ag(s) rarr Ag^(+)(aq) +e^(-) E^(o) = - 0.80 V Which one of the following reactions actually takes place?

The standard potential E^(@) for the half reactions are as : Zn rarr Zn^(2+) + 2e^(-), E^(@) = 0.76V Cu rarr Cu^(2+) +2e^(-) , E^(@) = -0.34 V The standard cell voltage for the cell reaction is ? Zn +Cu^(2) rarr Zn ^(2+) +Cu

The standard oxidation potentials, , for the half reactions are as follows : Zn rightarrow Zn^(2+) + 2e^(-) , E^(@) = +0.76V Fe rightarrow Fe^(2+)+ 2e^(-), E^(@) = + 0.41 V The EMF for the cell reaction, Fe^(2+) + Zn rightarrow Zn^(2+) + Fe

Reduction potential for the following half-cell reaction are Zn rarr Zn^(2+)+2e^(-),E_(Zn^(2+)//Zn)^(@) = -0.76V Fe rarr Fe^(2+)+2e^(-),E_(Fe^(2+)//Fe)^(@) = -0.44V The emf for the cell reaction Fe^(2+) + Zn rarr Zn^(2+)+Fe will be

The standard electrode potential of the half cells are given below : Zn^(2+)+ 2e^(-) rarr Zn(s), E^(o) = - 7.62 V Fe^(2+) + 2e^(-) rarr Fe(s) , E^(o) = -7 .81 V The emf of the cell Fe^(2+) + Zn rarr Zn^(2+) + Fe will be :

Ag^(+) + e^(-) rarr Ag, E^(0) = + 0.8 V and Zn^(2+) + 2e^(-) rarr Zn, E^(0) = -076 V . Calculate the cell potential for the reaction, 2Ag + Zn^(2+) rarr Zn + 2Ag^(+)

For Zn^(2+) //Zn, E^(@) =- 0.76 , for Ag^(+)//Ag, E^(@) = -0.799V . The correct statement is

Calculate the standard free enegry change for the reaction: Zn + Cu^(2+)(aq) rarr Cu+Zn^(2+) (aq), E^(Theta) = 1.20V

The standard reduction potential of zinc and silver at 298 K are E_((Zn^(2+)) /(Zn))^0 = -0.76 V , E_((Ag^(+))/(Ag))^0= 0.80V Which of the following reactions actually takes place in a cell reaction?

The half cell reactions with reduction potentials are Pb(s) to Pb^(+2) (aq), E_("red")^(@) =-0.13 V Ag(s) to Ag^(+) (aq) , E_("rod")^(@) =+0.80 V Calculate its emf.

VMC MODULES ENGLISH-ELECTROCHEMISTRY-ENABLE
  1. The electrode potential at 298 K for Zn//Zn^(2+) electrode in which th...

    Text Solution

    |

  2. Standard reduction potential at 25^(@)C of Li^(+)//Li,Ba^(+)//Ba,Na^(+...

    Text Solution

    |

  3. At 20^(@) C, the standard oxidation potential of Zn and Ag in water ar...

    Text Solution

    |

  4. Copper from copper sulphate solution can be displacesd by. (The standa...

    Text Solution

    |

  5. Standard electrode potential data is given below : Fe^(3+) (aq) + e ...

    Text Solution

    |

  6. Which of the following metals does not give the following reaction? (M...

    Text Solution

    |

  7. Red hot carbon removes oxygen from the oxide XO and YO but not from ZO...

    Text Solution

    |

  8. For a cell reaction involving a two electron change, the standrard emf...

    Text Solution

    |

  9. For a cell reaction : M^(n+)(aq)+"ne"^(-) to M(s), the Nernst equatio...

    Text Solution

    |

  10. The reaction Zn^(2+) + 2e^(–)rarrZn(s) has a standard potential of – 0...

    Text Solution

    |

  11. Which of the following will increase the voltage of the cell? Sn(s) ...

    Text Solution

    |

  12. Standard reduction electrode potentials of three metals A,B and C are ...

    Text Solution

    |

  13. On the basis of information available from the reaction (4)/(3)Al+O(...

    Text Solution

    |

  14. The potential of a hydrogen electrode at pH = 1 will be:

    Text Solution

    |

  15. How much will the reduction potential of a hydrogen electrode change w...

    Text Solution

    |

  16. Adding powdered Pb and Fe to a solution containing 1.0 M each of Pb^(+...

    Text Solution

    |

  17. For the redox reaction Zn(s) + Cu^(2+) (0.1M) rarr Zn^(2+) (1M) + Cu(s...

    Text Solution

    |

  18. The EMF of a Daniel cell at 298K is E(1). The cell is: Zn(s)abs( ZnSO(...

    Text Solution

    |

  19. The oxidation electrode potential E, of a 0.1 M solution of M^(+) ion...

    Text Solution

    |

  20. Two metals A and B have E(RP)^(0) = – 0.76 V and + 0.80 V respectively...

    Text Solution

    |