Home
Class 12
CHEMISTRY
Write the Nernst equation & EMF of the c...

Write the Nernst equation & EMF of the cells at 298 K :
`Mg(s)|Mg^(2+)(0.001M)||Cu^(2+)(0.0001M)|Cu(s)`

Text Solution

Verified by Experts

Cell reaction : `Mg+Cu^(2+)rarr Mg^(2+)+Cu (n=2)`
Nernst equation : `E_("cell")=E_("cell")^(@)-(0.059)/(2)"log"([Mg^(2+)])/([Cu^(2+)])`
`therefore E_("cell")=0.34-(-2.37)-(0.059)/(2)"log"(10^(-3))/(10^(-4))=2.68 V`
Promotional Banner

Topper's Solved these Questions

  • ELECTROCHEMISTRY

    CHHAYA PUBLICATION|Exercise HIGHER ORDER THINKING SKILL (HOTS) QUESTIONS|30 Videos

  • ELECTROCHEMISTRY

    CHHAYA PUBLICATION|Exercise ADVANCED LEVEL NUMERICAL BANK|38 Videos

  • ELECTROCHEMISTRY

    CHHAYA PUBLICATION|Exercise SOLVED NCERT TEXTBOOK PROBLEMS (NCERT INTEXT QUESTIONS)|25 Videos

  • D - AND F - BLOCK ELEMENTS

    CHHAYA PUBLICATION|Exercise PRACTICE SET 8 (Answer the following questions)|10 Videos

  • ENVIRONMENTAL CHEMISTRY

    CHHAYA PUBLICATION|Exercise PRACTICE SET 14(Answer the following questions)|6 Videos

Similar Questions

Explore conceptually related problems

Write the Nernst equation & EMF of the cells at 298 K : Sn(s)|Sn^(2+)(0.050M)||H^(+)(0.020M)|H_(2)(g)("1 bar")|Pt(s)

Write the Nernst equation & EMF of the cells at 298 K : Fe(s)|Fe^(2+)(0.001M)||H^(+)(1M)|H_(2)(g)("1 bar")|Pt(s)

Write the Nernst equation & EMF of the cells at 298 K : Pt(s)|Br_(2)(l)Br^(-)(0.010M)||H^(+)(0.030M)|H_(2)(g)|("1 bar")Pt(s)

Calculate the E.M.F. for the cell given below Mg(S)|Mg^(2+)(0.001)(M)||Cu^(2+)(0.01M)|Cu(S) given E_(Mg^(2+)//Mg)^@ =-2.36V. E_(Cu^(2+)//Mg)^@ =+0.34V

Write down the appropriate Nernst equation for the following voltaic cell and calculate the e.m.f. of the cell at 298 K. Fe(s)|Fe^(2+)(0.002M)||Ag^(+)(0.02M)|Ag(s) ["Given, "E_(Fe^(2+)|Fe)^(@)=-0.44V and E_(Ag^(+)|Ag)^(@)=+0.80V" at 298K"]

Write the Nernst equation for the half cell Zn_((aq))^(2+)//Zn_((s)).

Write down the appropriate Nernst equation for the following voltaic cell and calculate the e.m.f. of the cell at 298 K. Fe(s)|Fe^(2+)(0.002M)||Ag^+(0.02M)|Ag (s) (Given : E_(Fe^(2+)//fe)^@ =-0.44V and E_(Ag^+//Ag)^@ =0.80V at 298 K) 1+2

Write the cell reaction and calculate the emf of the following cell at 298 K. Sn(s)|Sn^(2+)(0.004M)||H^(+)(0.02M)|H_(2)(g)"(1 bar)"|Pt(s). (E_(Sn^(2+)|Sn)=-0.14V)

Calculate the E.M.F. for the cell given below and identify the cathod and anode. Mg (S) | Mg^(2+) (0.001M) || CU^(2+) (0.01M) | Cu(S) E_(Mg^(2+)//Mg) = - 2.36 V and E_(Cu^(2+)//Cu) = + 0.34 V.

Write down the appropriate Nernst equation for the followign volataic cell and calcualte the emf of the cell at 298K. Fe(s)|Fe^(2+) (0.002 M)||Ag^+(0.02 M) |Ag(s) Given E^@_(Fe^(2+)//Fe) = 0.44 V and E^@_(Ag^(2+)//Ag) = 0.80v at 298K.

CHHAYA PUBLICATION-ELECTROCHEMISTRY-SOLVED NCERT TEXTBOOK PROBLEMS (NCERT EXERCISE QUESTIONS)
  1. Calculate the standard cell potentials of the galvanic cells in which ...

    Text Solution

    |

  2. Calculate the standard cell potentials of the galvanic cells in which ...

    Text Solution

    |

  3. Write the Nernst equation & EMF of the cells at 298 K : Mg(s)|Mg^(2+...

    Text Solution

    |

  4. Write the Nernst equation & EMF of the cells at 298 K : Fe(s)|Fe^(2...

    Text Solution

    |

  5. Write the Nernst equation & EMF of the cells at 298 K : Sn(s)|Sn^(2...

    Text Solution

    |

  6. Write the Nernst equation & EMF of the cells at 298 K : Pt(s)|Br(2)...

    Text Solution

    |

  7. In the button cells widely used in watches and other devices the follo...

    Text Solution

    |

  8. Define conductivity and moiar conductivity for the solution of an elec...

    Text Solution

    |

  9. The conductivity of 0.20 M solution of KCl at 298 K is 0.0248 S.cm^(-1...

    Text Solution

    |

  10. The resistance of a conductivity cell containing 0.001M KCl solution a...

    Text Solution

    |

  11. The conductivity of sodium chloride at 298 K has been determined at di...

    Text Solution

    |

  12. Conductivity of 0.00241M acetic acid solution is 7.896xx10^(-5)S.cm^(-...

    Text Solution

    |

  13. How much charge is required for the following reductions : 1 mol of...

    Text Solution

    |

  14. How much charge is required for the following reductions : 1 mol of...

    Text Solution

    |

  15. How much charge is required for the following reductions : 1 mol of...

    Text Solution

    |

  16. How much electricity in terms of Faraday is required to produce - 2...

    Text Solution

    |

  17. How much electricity in terms of Faraday is required to produce - 4...

    Text Solution

    |

  18. How much electricity is required for the oxidation of - 1 mol of H(...

    Text Solution

    |

  19. How much electricity is required for the oxidation of - 1 mol of Fe...

    Text Solution

    |

  20. A solution of Nl(NO(3))(2) is electrolysed between platinum electrodes...

    Text Solution

    |