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because calomel act as a reference 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
SCE can act as both anode and cathode according to the nature of other electrode.
(UK) ACM, scimed, Sentek
Chemical formula for Calomel: Hg2Cl2
246 mV
because calomel act as a reference 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.
because that tip of the calomel electrode is made up of porous nature..If we keep it in environment, its get oxidised,,
For example, the silver/silver chloride electrode (without mercury).
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
Walter Fieldhouse Clarke has written: 'I. A study of the hydrogen electrode, of the calomel electrode and of contact potential. II. A study of the ethylene electrode. III. Studies in oxidation and reduction ..' -- subject(s): Accessible book, Electrolysis
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
SCE can act as both anode and cathode according to the nature of other electrode.
(UK) ACM, scimed, Sentek
No, Use a Mercury Oxide electrode in alkalai Media. Strong NaOH will damage glass. Available from Koslow Scientific Co.
Chemical formula for Calomel: Hg2Cl2