Electricity for public schools and colleges . SA-. ,^^eao^i°3*^^^-- -H— - Fig. ii. the kathode, an odd O at the anode, with groups of OH, between, as before. II. The Daniells <;<//.—Here we will consider the case of abattery-cell itself, since all we have said of electrolysis appliesto the battery-cell equally with the electrolytic-cell, to chemicalcombination equally with chemical decomposition. In the battery- i88 ELECTRICITY CH. Fig. iii. cell the copper plate is the kathode, and the zinc plate is theanode. The Zn against the zinc plate represents an atom of theoriginally undiss
Electricity for public schools and colleges . SA-. ,^^eao^i°3*^^^-- -H— - Fig. ii. the kathode, an odd O at the anode, with groups of OH, between, as before. II. The Daniells <;<//.—Here we will consider the case of abattery-cell itself, since all we have said of electrolysis appliesto the battery-cell equally with the electrolytic-cell, to chemicalcombination equally with chemical decomposition. In the battery- i88 ELECTRICITY CH. Fig. iii. cell the copper plate is the kathode, and the zinc plate is theanode. The Zn against the zinc plate represents an atom of theoriginally undissolved zinc. The arrangement of brackets repre-sents that when thecircuit is closed thisCur—^-^ Zn takes SO4 fromthe nearest H2SO4;this leaves to takeSO4 from the nextH.,S04, and soon ; Ho then passingthrough the porouscell takes SO4 fromthe next CuSO^, andso on, until finally Cu is deposited on the copper plate (thekathode). As explained earlier, no change due to this interchange willbe observable saving at the surfaces of the battery plates. § 5. Primary and Secondary Decompositions.—We will nowcomplete the theory of electrolysis, explaining the results of de-composition noticed in § 3, (ii.), (iii.), (v.), &:c. There is every reason for, and no reason against, the view thatin electrolysis we have primarily the metallic, and the non-metallic, groups set free against the kathode and anode respec-tively. But for reasons of
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Keywords: ., bookcentury1800, bookdecade1890, bookpubl, booksubjectelectricity
