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Questions
It is impossible to measure the potential of a single electrode. Comment.
Why is it not possible to measure the single electrode potential?
Why is it impossible to measure the absolute electrode potential of a single electrode?
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Solution
- Every oxidation reaction needs to be accompanied by a reduction reaction.
- The occurrence of only oxidation or only reduction is not possible.
- In a galvanic cell oxidation and reduction occur simultaneously.
- The potential associated with the redox can be experimentally measured. For the measurement of potential, two electrodes need to be combined together where the redox reaction occurs.
Hence, it is impossible to measure the potential of a single electrode.
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