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Difference between primary and secondary reference electrode(short question)
Accepted Answer
Primary reference electrode:
- Standard hydrogen electrode (SHE)
- Used to establish the absolute potential scale
- Consists of a platinum electrode immersed in a solution of hydrogen ions at unit activity and under a pressure of 1 atm
Secondary reference electrode:
- Calomel electrode
- Silver/silver chloride electrode
- Used for practical purposes
- Have a stable and reproducible potential relative to the SHE
- Convenient to use and maintain
- Standard hydrogen electrode (SHE)
- Used to establish the absolute potential scale
- Consists of a platinum electrode immersed in a solution of hydrogen ions at unit activity and under a pressure of 1 atm
Secondary reference electrode:
- Calomel electrode
- Silver/silver chloride electrode
- Used for practical purposes
- Have a stable and reproducible potential relative to the SHE
- Convenient to use and maintain
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