In the construction of a calomel electrode, the KCl solution must be saturated with calomel What does this - Chemistry -

Question

In the construction of a calomel electrode, the KCl solution must
be saturated with calomel What does this mean?

Geetha · Accepted Answer

Calomel electrode acts as a reference electrode
 Calomel electrode consists of a Hg and HgCl2 solution
 Compared to Standard hydrogen electrode this calomel electrode is easy to maintain
 Here the paste of HgCl2and solid Hg attached to a rod is immersed in saturated KCl solution
 Saturated solution of KCl allows the exchange of ions through a porous salt bridge, which is used to complete the circuit
 12 HgCl2 + e- ↔Hg + Cl-
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"https://s3mn%20mnimgs%20com/img/shared/ck-files/ck_566efd56dfdfd%20png"
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In the construction of a calomel electrode, the KCl solution must be saturated with calomel . What does this mean?