An Introduction to the Analytical Chemistry of the Rarer Elements (Classic Reprint) - Tapa blanda

Sinopsis

Excerpt from An Introduction to the Analytical Chemistry of the Rarer Elements

The experiments described in this book are designed to lay a sound foundation for the analytical study of the rarer elements. The great economic importance attained by these metals in the last decade indicates the imperative need of introducing into our colleges and universities a course of instruction such as is given in this book. Lectures and text-book study unsupported by adequate laboratory practice are ineffective in this essentially experimental field. The author wishing to give his students a brief laboratory course in the rarer elements in which the analytical side would be emphasized, looked about in vain for a suitable text. He there fore prepared this series of experiments to meet his requirements. Every experiment described in this manual was personally performed and repeated by the author. As is well known, the results obtained in preliminary experiments in qualitative analysis depend not only upon the concentrations of the test-solutions used, but also upon the strengths of the reagents employed. To this end, test - solutions of known concentrations are invariably em ployed. The preparation of these solutions is facilitated by the use of the author's special table giving the quantities of the salts or compounds to be used in each set of experiments. To insure further definiteness in the results, directions are given for pre paring the reagents to be used in making the tests.

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