Question
Can we measure the absolute value fo single electrode potential? Explain.
Solution
It is not possible to measure the absolute value of single electrode potential because neither oxidation nor reduction takes place independently. We can measure electrode potential with reference to a reference electrode. For this purpose, standard hydrogen electrode has been selected as the reference and is assigned an arbitrary value of zero volts in the standard state.
The potential difference as measured between any electrode and the standard reference electrode is taken as the reduction potential of the electrode.
The potential difference as measured between any electrode and the standard reference electrode is taken as the reduction potential of the electrode.
