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NEET-XII-Chemistry

03: Electrochemistry

 page 2
Qstn# II-6 Prvs-QstnNext-Qstn
  • #6
    In the button cells widely used in watches and other devices the following reaction takes place:

    Zn(s) + Ag2O(s) + H2O(l) → Zn2+(aq) + 2Ag(s) + 2OH-(aq)

    Determine

    and for the reaction.
    Ans :

    = 1.104 V

    We know that,



    = -2 × 96487 × 1.04

    = -213043.296 J

    = -213.04 kJ