Home
Class 12
CHEMISTRY
For the cell Zn// Zn^(2+) // // Cu^(2+) ...

For the cell `Zn// Zn^(2+) // // Cu^(2+) // Cu` , if the concentration of `Zn^(2+) and Cu^(2+)` ions is doubled , the emf of the cell

A

doubles

B

reduces to half

C

remains same

D

remains zero

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    AAKASH SERIES|Exercise LEVEL-I ( EXERCISE-II)|51 Videos

  • ELECTROCHEMISTRY

    AAKASH SERIES|Exercise LEVEL-II (LECTURE SHEET ( EXERCISE -I ( SINGLE & ONE OR MORE THAN ONE CORRECT ANSWER )))|32 Videos

  • ELECTROCHEMISTRY

    AAKASH SERIES|Exercise EXERCISE - 4.2|50 Videos

  • DILUTE SOLUTIONS

    AAKASH SERIES|Exercise EXERCISE - 1.2|55 Videos

  • ELEMENTS OF D - BLOCK

    AAKASH SERIES|Exercise EXERCISE - 5.2|33 Videos

Similar Questions

Explore conceptually related problems

For the cell Zn|Zn^(2+) (C_1)||Zn^(2+) (C_2)|Zn . DeltaG is negative if :

Calculate the concentration of silver ions in the cell constructed by using 0.1 M concentration of Cu^(2+) and Ag^(+) ions. Cu and Ag metals are used as electrodes. The cell potential is 0.422 V. [E _(Ag^(2+)//Ag)=0.80V,E_(Cu^(2+)//Cu)=+0.34V]

For the cell Zn(s) | Zn^(2+) || Cu^(2+) | Cu(s) , the standard cell voltage E_("cell")^(0) is 1.10 V . When a cell using these reagents was prepared in the lab, the measured cell voltage was 0.97 V . One possible explanaiton of the observed voltage is

E.m.f. of the cell Zn|Zn^(2+)(1)||Cu^(2+)(1M)|Cu is 1.1 volt. If the standard reduction potential of Zn^(2+)|Zn is -0.78 volt, what is the oxidation potential of Cu|Cu^(2+) ?

The e.m.f. of the cell reaction Zn_((s)) + Cu_((aq))^(+2) to Zn_((aq))^(+2) + Cu_((s)) is 1.1 V. Calculate the free energy of the cell reaction.

E^(0) for the reaction Fe + Zn^(2+) to Zn + Fe^(2+) is -0.35 V . The given cell reaction is

The single electrode reactions, Cd(s) to Cd^(2+) (0.1) + 2e^(-) , E ^@ = 0.4030 Cu^(2+) + 2e^(-) to Cu (s), E^@ = 0.337 can be combined to give the cell reaction, Cd(s) + Cu^(2+) to Cu (s) The emf of the cell is

The standard potential (E^(0)) for the half reaction are as Zn to Zn^(2+) + 2e^(-) , E^(0) = + 0.76 V Fe to Fe^(2+) + 2e^(-) , E^(0) = + 0.41 V . The emf for the cell reaction Fe^(2+) + Zn to Zn^(2+) + Fe is

The standard EMF for the cell reaction , Zn + Cu^(2+) to Cu + Zn^(2+) is 1.1 volt at 25^@ C . The EMF for the cell reaction , when 0.1 M Cu^(2+) and 0.1 M Zn^(2+) solutions are used , at 25^@ C is

AAKASH SERIES-ELECTROCHEMISTRY -LEVEL-I ( EXERCISE-I)
  1. The e.m.f of the following Deniell at 298 K is E1 , Zn//ZnSO4 (0.01 M...

    Text Solution

    |

  2. Zn(s) + Cl2 (1 atm ) to Zn^(2+) + 2Cl^(-) , the E^(0) of the cell is ...

    Text Solution

    |

  3. For the cell Zn// Zn^(2+) // // Cu^(2+) // Cu , if the concentration o...

    Text Solution

    |

  4. In a cell that utilises the reaction Zn((s)) + 2H((aq))^(+) to Zn((aq)...

    Text Solution

    |

  5. For a cell reaction , Cu^(2+) (C1 , aq) + Zn(s) to Zn^(2+) (C2 , aq) +...

    Text Solution

    |

  6. The relationship between standard reduction potential of a cell and eq...

    Text Solution

    |

  7. For a spontaneous reaction the DeltaG , equilibrium constant (K) and E...

    Text Solution

    |

  8. For the reaction Pt// H2 (1 atm) // H^(+) (aq) // // Cl^(-) (aq) // Ag...

    Text Solution

    |

  9. The relationship between free energy and electrode potential is

    Text Solution

    |

  10. When an electric cell is charged, then

    Text Solution

    |

  11. When lead storage battery is discharged

    Text Solution

    |

  12. When lead storage battery is charged

    Text Solution

    |

  13. During the charging of lead storage battery, the reaction occuring at ...

    Text Solution

    |

  14. With respect to fuel cell prepared from H2 and O2 gases, the false sta...

    Text Solution

    |

  15. Hydrogen - oxygen fuel cells are used in space prograins to supply

    Text Solution

    |

  16. In a hydrogen - oxygen fuel cell, combustion of hydrogen occurs to

    Text Solution

    |

  17. Which of the following reactions is used to make a fuel cell ?

    Text Solution

    |

  18. Corrosion is basically a/an

    Text Solution

    |

  19. In which of the following will the corrosion of iron be most rapid ?

    Text Solution

    |

  20. Which of the following metals acts as a sacrificial anode for iron art...

    Text Solution

    |