Practical Methods for Determining Molecular Weights (Classic Reprint)

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Excerpt from Practical Methods for Determining Molecular Weights The methods for determining molecular weights, have been extended and increased within the last few years, by a number of pieces of work. These contributions are scattered throughout the literature. A brief description of the methods can be found in a number of smaller special works. These books are, however, considered to be somewhat too elementary for the use of a chemical laboratory. They show how, in simple cases, the molecular weight of a substance can be ascertained, and they suffice as a guide for carrying out a determination for practice. The investigations in the chemical laboratory, however, include very often, more complex cases, which can be dealt with only by a thorough study of the original literature. The purpose of this book is to furnish information in such cases, either directly, or by referring to the existing publications. The forms of apparatus, used by chemists in determining molecular weights, are described here, and as far as appears to be necessary, are shown in drawings. The manner of carrying out the experiments is described with considerable fullness. Details, which facilitate work, practical devices, which teaching and my own experience have furnished, are treated at considerable length. Modifications of apparatus, and manipulation, are treated in special sections. I believe that the experimenter will not have his individual initiative interfered with, by such a detailed description of the methods. 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.