Home
Class 12
CHEMISTRY
Describe Mercury cell....

Describe Mercury cell.

Text Solution

Verified by Experts

Mercury cell is a primary cell. Suitable for low current devices.
Anode. Zinc-Mercury amalgam
Cathode - Paste of HgO and Carbon
Electrolyte: Paste of KOH and ZnO.
Cell reactions.
`{:(,"Anode",Zn(Hg) 2OH^(-) to ZnO(s)+H_(2)O+2e^(-)),(,"Cathode",HgO+H_(2)O+2e^(-)to Hg(l)+2OH^(-)):}`
Overl all reaction: `Zn(Hg)+HgO(s) to ZnO(s)+Hg(l)`
Cell potential -1.35V
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    SUBHASH PUBLICATION|Exercise Problem Section|25 Videos

  • CO-ORDINATION COMPOUNDS

    SUBHASH PUBLICATION|Exercise Questions|33 Videos

  • EXAM QUESTION PAPER JULY WITH ANSWER (2015)

    SUBHASH PUBLICATION|Exercise PART E|21 Videos

Similar Questions

Explore conceptually related problems

Describe the structure of amines

Describe the structure of blastula.

Describe the structure and functioning of nephrons.

Describe the structure of a seminiferous tubule.

Describe the structure of mature embryosale

Describe the structure of cerebellum.

Describe the structure of t-RNA.

Write the overall cell reaction in mercury cell.

Mention the reactions occuring at (i) anode (ii) cathode , during working of a mercury cell. Why does the voltage of a mercury cell remain constant during its operation?

SUBHASH PUBLICATION-ELECTROCHEMISTRY-Problem Section
  1. Describe Mercury cell.

    Text Solution

    |

  2. E(cu)^(0)=0.34 and E(zn)^(0)=-0.76V. Calculate E("cell")^(0).

    Text Solution

    |

  3. E(Cu)^(0)=+0.34V and E(Ag)^(0)=+0.8V" calculate "E(cell")^(0).

    Text Solution

    |

  4. Calculate the EMF of the cell for the reaction. Mg((s))+2Ag((aq))^+ ...

    Text Solution

    |

  5. Calculate the e.m.f. of the cell in which the following reaction takes...

    Text Solution

    |

  6. Represent the cell in which the following reaction takes place Mg(s)...

    Text Solution

    |

  7. Calculate EMF of the cell represents below Zn//Zn^(2+)(C=0.1M)||Cu^(2+...

    Text Solution

    |

  8. For the standard cell Cu(s)|Cu^(2+)(aq)||Ag^(+)(aq)|Ag(s). [E((Cu^(2+)...

    Text Solution

    |

  9. For the standard cell Cu(s)|Cu^(2+)(aq)||Ag^(+)(aq)|Ag(s). [E((Cu^(2+)...

    Text Solution

    |

  10. Find the value of AG^(@) at 25^(@)C for the following electrochemical ...

    Text Solution

    |

  11. Calculate e.m.f. of cell for the reaction : Mg((s))+Cu^(2+)"(0.0001 ...

    Text Solution

    |

  12. Calculate DeltarG^@ for the following reactions: Fe^(+2) (aq)+Ag^(+)...

    Text Solution

    |

  13. Find the value of AG^(@) at 25^(@)C for the following electrochemical ...

    Text Solution

    |

  14. (a) The electrode potential for the Daniell cell given below is 1.1 V....

    Text Solution

    |

  15. Calculate standard free energy change for reaction Zn(S)+2Ag^(+)(aq) L...

    Text Solution

    |

  16. Calculate the equilibrium constant for the reaction Cu(s)+2Ag+(aq)ra...

    Text Solution

    |

  17. Calculate the equilibrium constant for the reaction Cu(s)+2Ag+(aq)ra...

    Text Solution

    |

  18. The cell in which of the following reaction occurs: 2Fe^(3+)(aq)+2I^...

    Text Solution

    |

  19. Resistance of a conductivity cell filled with 0.02 M KCl solution is 5...

    Text Solution

    |

  20. The resistance of solution of a salt occupying a volume between two pl...

    Text Solution

    |

  21. c) Resistance of a conductivity cell containing 0.1 M KCl solution is ...

    Text Solution

    |