Home
Class 12
CHEMISTRY
For the cell Zn|Zn^(+2)||Cu^(+2)|Cu, if ...

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

becomes zero

Text Solution

Verified by Experts

The correct Answer is:
C
Ration of log`[Zn^(2+)]/[Cu^(2+)]` remain same.
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    MARVEL PUBLICATION|Exercise Previous years Entrance Exams MCQ|55 Videos

  • ELECTROCHEMISTRY

    MARVEL PUBLICATION|Exercise Test your Grasp|50 Videos

  • D AND F BLOCK ELEMENTS

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP|60 Videos

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    MARVEL PUBLICATION|Exercise Test Your Grasp|30 Videos

Similar Questions

Explore conceptually related problems

Consider the cell Zn|Zn^(2+) || Cu^(2+)|Cu. If the concentration of Zn and Cu ions are doubled, the emf of the cell.

In the Daniel cell, if the concentrations of Zn^(2+) and Cu^(2+) ions are doubled at 298 K , the e.m.f. Of the cell __________.

In the cell Zn|Zn^(2+)||Cu^(2+)|Cu , the negaitve terminal is

In the cell, Zn|Zn^(2+)"||"Cu^(2+)|Cu ________.

Assertion (A) : In a Daniell cell, if the concentration of Cu^(2+) and Zn^(2+) ions are doubled, the EMF of the cell will be doubled. Reason (R) : If the concentration of ions in contact with metals is doubled, the electrode potential is doubled.

The e.m.f of the cell Zn|Zn^(2)||Cu^(2+)|Cu can be increased by

Statement-I: In the Daniel cell, if concentration of Cu^(2+) and Zn^(2+) ions are doubled the emf of the cell will not change. Because Statement-II: If the concentration of ions in contact with the metals is doubled, the electrode potential is doubled.

MARVEL PUBLICATION-ELECTROCHEMISTRY-Test your Grasp
  1. For the cell Zn|Zn^(+2)||Cu^(+2)|Cu, if the concentration of Zn^(+2) a...

    Text Solution

    |

  2. An electric current is passed through an aqueous solution of the follo...

    Text Solution

    |

  3. Electrolysis involves oxidation and reduction respectively at .

    Text Solution

    |

  4. The metal which can not displace hydrogen from dil. H(2)SO(4) solution...

    Text Solution

    |

  5. The amount of electricity required to deposit one gram atom of Mg from...

    Text Solution

    |

  6. During electrolysis electrons flow from

    Text Solution

    |

  7. In a solution of CuSO(4) how much time will be required to preciitate ...

    Text Solution

    |

  8. 0.1 ampere current is passed for 10 seconds through Cu and Ag. The met...

    Text Solution

    |

  9. How many electrons are there in one coulomb of electricity?

    Text Solution

    |

  10. The emf of cell is 1.3 Volt. The positive electrode has potential of 0...

    Text Solution

    |

  11. How many Faradays are required to liberate one mole of O(2) gas at N.T...

    Text Solution

    |

  12. A silver cup is plated with silver by passing 965 coulombs of electric...

    Text Solution

    |

  13. A, B,C and D are four elements with E(oxd)^(0) as +2.82V, +2.71V, +1.6...

    Text Solution

    |

  14. During rusting of iron it gets

    Text Solution

    |

  15. The electrode potential of a silver electrode dipped in 0.1 M AgNO(3) ...

    Text Solution

    |

  16. A certain current liberated 0.504 g of hydrogen in 2 hours. How many g...

    Text Solution

    |

  17. The rusting of iron is catalysed by which of the following ?

    Text Solution

    |

  18. In a cell containing zinc electrode and hydrogen electrode,If the redu...

    Text Solution

    |

  19. E^(@) of Mg^(2+) || Mg, Zn^(2+) || Zn, and Fe^(2+)||Fe are -2.37V, -0....

    Text Solution

    |

  20. The reaction M^(2)+2e^(-) to M has standard potential of -0.66V . This...

    Text Solution

    |

  21. Rgw atomic weight of Al is 27. When a current of 5F is passed through ...

    Text Solution

    |