Q 59 Electrochemistry

​Q59. A Daniel Cell is made at 25°C by connecting Zn / Zn+2 (0.1 M, 1 litre ) & Cu / Cu+2 (0.9 M, 1 litre ) electrode. The cell is discharged till its emf reaches 1.10 volt, then it is charged (reversing the discharge process ) by passing 0.6 F charge.

    [   Given   :   E ° Zn   / Zn + 2   = 0 . 76   V ,   E ° Cu   / Cu + 2   = - 0 . 34   V ,   2 . 303   RT F                                               =   0 . 06 ,   log   2   =   0 . 30   ]

           Select the incorrect option is.

    (1) Concentration of Zn+2 becomes 1 M when EMF reach 1.10 volt.

    (2) Concentration of Cu+2 becomes 0.5 M when EMF reach 1.10 volt.

    (3) EMF of the cell just after charging is 1.118 volt

    (4) After charging concentration of Cu+2 becomes 0.8 volt.
 

the branch of chemistry that deals with the relations between electrical and chemical phenomena.
  • -74
Daniel cell
  • -27
Option B
  • -11
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