The indicator electrode forms an electrochemical half cell with the interested ions in the test solution.
2.
To do this, two electrodes are used, an indicator electrode ( the glass electrode and metal ion indicator electrode ) and a reference electrode.
3.
To do this, two electrodes are used, an indicator electrode ( the glass electrode and metal ion indicator electrode ) and a reference electrode.
4.
The indicator electrode must be suitable for the particular type of titration ( i . e . a glass electrode for acid-base reactions and a platinum electrode for redox titrations ), and should reach equilibrium rapidly.
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