Encyclopedia of Chemical Reactions III. [antikvár]

Introduction This is the third volume of a series intended ultimately to embrace the published reactions of the active chemical elements and their simpler compounds. Comparatively few chemical reactions will be found in the literature under the rarer elements, but whenever reactions of these elements are encountered in standard chemical journals they will be included in this compilation. The reactions under aluminum, antimony, arsenic, barium, beryllium, bismuth, boron and bromine were included in Volume I, and cadmium, calcium, carbon, cerium, cesium, chlorine and chromium were covered in Vol. II. Since the "Encyclopedia of Chemical Reactions" is planned on the alphabetical system throughout, the following elements have been included in Vol. III: cobalt, columbium, copper, didymium, dysprosium, erbium, europium, fluorine, gadolinium, gallium, germanium, gold, hafnium, holmium, hydrogen, illinium, indiumHiodine and iridium. This volume contains 822 reactions under cobalt alone and 610 under copper; whereas holmium and illinium are represented by one reaction each and hafnium by two. The introduction to Vol. II contains a discussion of coordinate valence reactions of cobalt and chromium, together with the abbreviations used. To save space, many of the complex reactants herein described have been written in abbreviated forms. Whenever an element is known by two names, e.g., columbium and niobium, the more common form has been used to the exclusion of the other. Frequently équations are encountered in the literature that are unbal-anced. Whenever it is a question of adding or substracting water to make the équation balance, this has been done, but in all these cases the équations so modified have been placed in parentheses. Frequently authors' names appear without initiais, but this is not an error of the abstractors or editor; such references are incomplete in the original. Dates too are sometimes found to be wrong. In many cases where an author describes a product obtained he neglects to mention the accom-panying by-products, although they are evident. In such cases the abstractor supplies the missing self-evident products and puts them in parentheses. This is why so many reactions are enclosed in parentheses. v