No coin nor oath required. For personal study only.
study. The volumetric section is terminated with a very complete summary of volumetric reactions expressed in the equation form.
Chapters XIII to XVIII cover the gravimetric methods. The opening chapter on the Theory, is extremely interesting and enlightening as well, discussing as it does, the conditions for complete precipitation and the purity of the precipitate. Description of actual gravimetric analyses follow preliminary instructions on precipitation, filtration, washing of precipitates, drying and ignition, and calculations. After describing the simpler methods, more involved procedures of gravimetric separations are illustrated by the analysis of limestone and of an insoluble silicate.
The method of electrolytic precipitations and separations is introduced by an adequate discussion of the theory followed by directions for the practical determination of copper, zinc and the analysis of brass, copper-nickel alloys, and German silver.
An Appendix contains tables of Ionization Constants and Solubility Products. At the end of almost every chapter will be found a group of review questions and problems.
T. K. CLEVELAND.
NATIONAL ADVISORY COMMITTEE FOR AERONAUTICS.
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