Fig. 95. Bichromate Cell. — The simplestform of single-fluid cell is knownas the bichromate cell. It con-sists of a zinc plate between two carbon plates suspendedin a solution of bichromate of potash sHghtly acidulatedwith sulphuric acid. The Grenet Cell (Fig. 96) is a common form of the… … current is needed for a short time. The zinc, Z, should beUfted out of the fluid when the cell is not in use. Theobjection to this cell is that the fluid travelsup the carbon plates and attacks the con-nections. The chromic acid formed in thiscell oxidizes the hydrogen and forms water,thus…
Physics
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