An Introduction to the Analytical Chemistry of the Rarer Elements (Classic Reprint)
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| Partner: | buecher.de |
| Hersteller: | Forgotten Books (Curtman, Louis J.) |
| Stand: | 2015-08-04 03:50:33 |
Produktbeschreibung
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 therefore 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 employed. 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 preparing the reagents to be used in making the tests. A laboratory course in the rarer elements is often objected to on the ground that the materials required are expensive. To meet this difficulty, it was necessary first, to provide that in each test a very small though definite quantity of metal be used; second, to carry out numerous experiments to determine the conditions under which conclusively visible results could be obtained when using small amounts of metal. Both of these tasks have been successfully accomplished. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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