A Brief Course In Qualitative Chemical Analysis For Schools And Colleges Classic Reprint

Author : Robert C. Kedzie
Publisher : Forgotten Books
ISBN 13 : 9781528171724
Total Pages : 84 pages
Book Rating : 4.1/5 (717 download)

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Download or read book Hand Book of Qualitative Chemical Analysis written by Robert C. Kedzie and published by Forgotten Books. This book was released on 2017-09-17 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from Hand Book of Qualitative Chemical Analysis: Selected and Arranged for the Students of the State Agricultural College of Michigan Many reagents exhibit the same or similar behavior with a group of chemi cally similar elements, and with most of the compounds of these elements; and can therefore be used to divide the elements into groups. Such reagents are called group reagents. Others serve for the further distinction of the several members of such groups, and are termed special reagents. Their selection de pends upon the knowledge of the behavior of such reagents to each single ele ment of the group, or of each of its several compounds. The number of special reagents is much greater than that of the group reagents, their nature being as various as that of the substances which come under examination. Their selection depends on the solubility or insolubility, color, or other physical or chemical properties of the new compounds to which they give rise. Certain special reagents produce reactions which are entirely characteristic of a given substance or compound. Such reagents and reactions are distinguished by be ing printed in small caps. It is the task of the analyst not only to establish that this or that body is present in a compound, but he is to prove that no other body is present beside those which he has actually found. Hence it is evident that he must not treat the substance under examination with reagents indiscriminately. He must fol low a certain fixed order, a methodical system in the application of reagents. This systematic method consists in the employment of group reagents for the successive separation of groups of elements possessing certain common chemi cal properties, and finally, in the recognition of each member in such group by the use of special reagents which are characteristic. The first thing to be done in the Qualitative Analysis of a solid body is to subject it to a preliminary examination in the dry way, whereby important in formation as to its composition may often be obtained. The substance is then dissolved and its constituents determined by analysis in the wet way. The course of Qualitative Analysis therefore embraces three parts. 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.