CONTENTS. xi
CHAPTER XVI.
Electro-analysis.
Determination of the quantity of salt in a solution by meaauring the cou- dactivity, 268. Application of the eleotrometer as an indicator, 269. Analyeia by metal deposition, 270. Peroxide precipitates, 274. Reduc- tion of nitric acid to ammonia, 275. Copper refining, 276. Precipitation of a metal from a solution containing two metal salts, 279. l^ositiou of hydrogen in deposition, 280. Analytical separation of the metaU, 281. Primary and secondary deposition of metal, 282. Difference of the temperature influence in primary and secondary processes, 284. Voltameter, 286.
CHAPTER XVII. pevelopment of Heat by the Electric Current.
ReTiew, 288. Arc light, 289. Influence of temperature on chemical reactions, 291. Fused electrolytes— Heronlt's furnaoe, 295. Xon- eleetrolytic prooesses with electrical heating — Cowles' furnace, 297. Resistance furnaces — ^The carborundum process, 299. Arc light fur- naces, 301. Prodnction of calcium carbide, 303. Silent elect rienl discharges, 305. Electrothermic and electrochemical actions, 307. Production of ozone, 309.
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