Calomel is a colorless, white, or brown, tasteless compound most commonly used as an insecticide.
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because that tip of the calomel electrode is made up of porous nature..If we keep it in environment, its get oxidised,,
Chemical formula for Calomel: Hg2Cl2
The calomel electrodes are usually used as the salt bridge.
because calomel act as a reference electrode
Calomel is mercury(I) chloride (mercurous chloride). It is ionic and contains the Hg22+ ion and the Cl- ion.
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Mercury is obtained from an ore called cinnabar or another called calomel. The places cinnabar and calomel can be mined in the world
246 mV
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
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
(UK) ACM, scimed, Sentek
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.