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). Explain the working of a saturated calomel electrode with the help of a diagram.
Accepted Answer
A saturated calomel electrode (SCE) is a reference electrode that is commonly used in electrochemistry. It consists of a platinum wire that is immersed in a saturated solution of calomel (Hg2Cl2) and mercury. The overall reaction for the electrode is:
Hg2Cl2(s) + 2 e- 2 Hg(l) + 2 Cl-
The potential of the electrode is determined by the concentration of chloride ions in the solution.
The SCE is a very stable and reproducible reference electrode, and it is often used as the reference electrode in potentiometric titrations.
Here is a diagram of a saturated calomel electrode:
[Image of a saturated calomel electrode]
The saturated calomel electrode is a simple and inexpensive reference electrode that is widely used in electrochemistry. It is a very stable and reproducible electrode, and it can be used in a variety of applications.
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