. Cyclopedia of applied electricity : a practical guide for electricians, mechanics, engineers, students, telegraph and telephone operators, and all others interested in electricity . Fiff. 17. Fijr. 18. Chemical Action in the Cell. The essential elements of avoltaic cell are: a plate, wliieli may be oxidized, such as zinc, aliquid capable of acting on this plate, such as sulphuric acid, andan inactive plate, such as copper. When the wiie connecting theplates is broken, there is no current, but upon closing the circuitchemical action takes place and a current flows. The chemicalreaction which
. Cyclopedia of applied electricity : a practical guide for electricians, mechanics, engineers, students, telegraph and telephone operators, and all others interested in electricity . Fiff. 17. Fijr. 18. Chemical Action in the Cell. The essential elements of avoltaic cell are: a plate, wliieli may be oxidized, such as zinc, aliquid capable of acting on this plate, such as sulphuric acid, andan inactive plate, such as copper. When the wiie connecting theplates is broken, there is no current, but upon closing the circuitchemical action takes place and a current flows. The chemicalreaction which occurs is represented as follows : Zn + H2SO4 = ZnSO^ + H^,which is equivalent to saying that the zinc (Zn) combining withthe sulphuric acid (HgSO^), produces ziuc sulphate (ZnSO^)and free hydrogen gas (H^). The hydrogen is given off as a gasfrom the liquid and zinc sulphate remains in solution. Thisaction takes place as long as the current flows and depends uponthe amount of current flowing. The zinc gradually dissolves intothe liquid and the latter gradually becomes a solution of zincsulphate. When the liquid no longer contains any acid or whenthe zinc is used up, the cliemi
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