briefly describe the standard hydrogen electron(SHE) and show how it is used to determine the reduction potential of a given half cell?
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A labelled diagram of a standard hydrogen electrode is provided below. In SHE illustrated, a salt bridge is used to link SHE with the other half cell.
The platinized platinum surface has a very high adsorption activity. Therefore, this surface must be protected from atmospheric oxygen as well as from organic substances. Substances such as arsenic and sulphur compounds can deactivate or poison the catalyst
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