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    How do you fidn the emf of unknown concentration of silver ions using electrochemical cells? I know that one of the half cells has to be copper. But I'm really confused as to what the other one should be. Would I use KBr, KCl and KI (one at a time) with a silver strip in the solutions? Or would the cell be made up of KBr, KCl or KI with some AgNO3(aq) with a silver strip in? And when I have the results how do I use them to find the concentration of the silver ions? Please help because I'm really reaaalllly confused..
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    (Original post by lozzyjay)
    How do you fidn the emf of unknown concentration of silver ions using electrochemical cells? I know that one of the half cells has to be copper. But I'm really confused as to what the other one should be. Would I use KBr, KCl and KI (one at a time) with a silver strip in the solutions? Or would the cell be made up of KBr, KCl or KI with some AgNO3(aq) with a silver strip in? And when I have the results how do I use them to find the concentration of the silver ions? Please help because I'm really reaaalllly confused..
    i think the other half cell would be the standard hydrogen electrode.

    If you are looking for the EMF of

    Ag(s) -------------> Ag+ (aq) + e-

    Then the other half cell would be a silver electrode dipped in AgNO3-(aq).
    You need a salt bridge aswell.

    One you get the EMF you have to compare it with the standard electrode potential for Ag(s) -------------> Ag+ (aq) + e-, which you wil have to look up.
 
 
 
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