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I know that ions from salt bridge move into the half cell in order to maintain electrical neutrality. But in my book it's also given that ions move from half cell into the salt bridge.

For example, in a galvanic cell with $\ce{ZnSO4}$ and $\ce{CuSO4}$, zinc ions from zinc sulphate solution move into the salt bridge in one half cell and sulphate ions from $\ce{CuSO4}$ move into the salt bridge in the other half cell .

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    $\begingroup$ Of course they do. How else would the current go through the bridge? $\endgroup$ Dec 27, 2017 at 13:24
  • $\begingroup$ @IvanNeretin I thought the current flowed because of the movement of electrons through the wire. $\endgroup$
    – Kxx
    Dec 27, 2017 at 13:40
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    $\begingroup$ True, but you have to complete the circuit. Current can't flow to one side only. $\endgroup$ Dec 27, 2017 at 13:47
  • $\begingroup$ chemistry.stackexchange.com/questions/19540/… $\endgroup$
    – Mithoron
    Dec 27, 2017 at 17:23

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