Transcription of The Glass pH Electrode - Electrochemical Society
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The Glass pH Electrode - Electrochemical Society
The Electrochemical Society Interface Summer 200419 Editor s note: We are pleased to introduce anew magazine column that aims to take the read-er back to the classroom. This series of tutorials willbe written by experts for a non-specialist audience. Pleaselet us know what you think of this new Glass Electrode is perhaps the most successful and ubiqui-tous Electrochemical sensor. It provides information aboutthe activity of hydronium ions, H3O+, in water. Becausewater, which mildly dissociates to H3O+and OH-ions, isthe most common solvent medium, and chemical reac-tions in water largely depend on H3O+activity, the abilityto measure it is essential. And conversely, because H3O+activity, or rather, its negative logarithm, the pH, is so easyto measure, pH is the most commonly monitored andrecorded parameter of liquid Glass Electrode (Fig.)
A glass electrode is perhaps the most successful and ubiqui-tous electrochemical sensor. It provides information about the activity of hydronium ions, H3O+, in water. Because water, which mildly dissociates to H3O+ and OH-ions, is the most …
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