The Principles of Chemistry

The Principles of Chemistry

Author: HardPress

Publisher: Hardpress Publishing

ISBN: 1313046108


Page: 654

View: 252

Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.

Basic Principles of Inorganic Chemistry

Basic Principles of Inorganic Chemistry

Author: Brian J Hathaway

Publisher: Royal Society of Chemistry

ISBN: 9781847550217

Category: Science

Page: 164

View: 320

General chemistry textbooks are usually lengthy and present chemistry to the student as an unconnected list of facts. In inorganic chemistry, emphasis should be placed on the connections between valence shell electron configuration and the physical and chemical properties of the element. Basic Principles of Inorganic Chemistry: Making the Connections is a short, concise book that emphasises these connections, in particular the chemistry of the Main Group compounds. With reference to chemical properties, Lewis Structures, stoichiometry and spider diagrams, students will be able to predict or calculate the chemistry of simple polyatomic compounds from the valence shell configuration and will no longer be required to memorise vast amounts of factual chemistry. This book is ideal for students taking chemistry as a subsidiary subject as well as honours degree students.

The Principles of Chemistry Volume 1

The Principles of Chemistry Volume 1

Author: Dmitry Ivanovich Mendeleyev

Publisher: Theclassics.Us

ISBN: 1230213422


Page: 340

View: 142

This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1897 edition. Excerpt: ... about 100 . In the laboratory the preparation of chlorine is carried on in flasks, heated over a water-hath, by acting on manganese peroxide and hydrochloric acid does give chlorine at a red heat, and this reaction may also take place at the moment of its evolution in this case. All the oxides of manganese (Mn2O-, MnO.j, MnOj, Mn207), with the exception of manganous oxide, MnO, disengage chlorine from hydrochloric acid, because manganous chloride, MnCl2, is the only compound of chlorine and manganese which exists as a stable compound, all the higher chlorides of manganese being unstable and evolving chlorine. Hence we here take note of two separate changes: (1) an exchange between oxygen and chlorine, and 12) the instability of the higher chlorine compounds. As (according to the law of substitution) in the substitution of oxygen hy chlorine, CL takes the place of O, the chlorine compounds will contain more atoms than the corresponding oxygen compounds. It is not surprising, therefore, that certain of the chlorine comiiounds corresponding with oxygen compounds do not exist, or if they are formed are very unstable, And furthermore, an atom of chlorine is heavier than an atom of oxygen, and therefore a given element would have to retain a large mass of chlorine if in the higher oxides the oxygen were replaced hy chlorine. For this reason equivalent compounds of chlorine do not exist for all oxygen compounds. Many of the former are immediately decomposed, when formed, with the evolution of chlorine. From this it is el ident that there should exist such chlorine compounds as would evolve chlorine as peroxides evolve oxygen, and indeed a large number of such compounds are known. Amongst them may be mentioned antimony pentachloride, ..