Question 41

One of the commonly used electrode is calomel electrode. Under which of the following categories, calomel electrode comes?

Solution

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A calomel electrode consists of mercury (metal) in contact with mercurous chloride (insoluble salt) and a chloride solution (anion). Its representation is: Hg | Hg₂Cl₂ | KCl (solution).

This falls under the category of Metal-Insoluble Salt-Anion electrodes.

The correct answer is Option 4.

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