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Calomel is a colorless, white, or brown, tasteless compound most commonly used as an insecticide.

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15y ago

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What is the formula for calomel?

The chemical formula for calomel is Hg2Cl2, where Hg represents mercury and Cl represents chlorine.


What are the uses of calomel electrodes?

The calomel electrodes are usually used as the salt bridge.


Why calomel electrode dip into kcl solution after the use?

The calomel electrode is dipped into a KCl solution to replenish the potassium chloride at its surface and maintain a stable electrolyte environment. This helps to ensure the proper functioning of the electrode and accurate measurement of the potential.


Where to purchase calomel?

black market


What is the half reaction of a saturated calomel electrode?

The half reaction of a saturated calomel electrode is Hg2Cl2(s) 2e- - 2Hg(l) 2Cl-


What is electrode potential of calomel electrode?

246 mV


Is calomel ionic or covalent?

Calomel is mercury(I) chloride (mercurous chloride). It is ionic and contains the Hg22+ ion and the Cl- ion.


What is the advantages of calomel electrode?

It cannot be used above 50 degree because the Hg2Cl2 breaks down,yielding an unstable readings. Mercurous chloride used in calomel electrode is a toxic substance


Why mercury placed at the bottom of calomel electrode?

Mercury is placed at the bottom of a calomel electrode to provide a stable and well-defined interface between the electrode and the electrolyte solution. This helps to maintain a consistent potential at the electrode/solution interface, making it a reliable reference electrode in electrochemical measurements.


What is the dis advantages of calomel electrode?

It cannot be used above 50 degree because the Hg2Cl2 breaks down,yielding an unstable readings. Mercurous chloride used in calomel electrode is a toxic substance


Describe the construction of calomel electrode?

It consists of tube in the bottom of which is a layer of mercury ,over which is placed a paste of Hg+HgCl2.The remaining portion of cell is filled with a solution of normal or decinormal or saturated solution of KCl. a platinum wire dipping into the mercury layer is used for making electrical contact. the side tube is used for electrode is formulated as;Hg,Hg2Cl2,KCl. the electrode can be coupled with the hydrogen electrode of unknown pH.


Can the saturated calomel reference electrode be used in strong alkaline media such as 2-5 N KOH solution?

No, the saturated calomel reference electrode is not suitable for use in strong alkaline solutions like 2-5 N KOH. The high pH environment can damage the electrode and affect its performance. It is better to use a reference electrode designed specifically for use in alkaline media, such as a silver/silver chloride electrode.