Synopsis
Excerpt from The Principles of Chemistry, Vol. 4
Of some eerpentioes. The commonest ore, and the chief source of the chromium compounds, is the chrome iron are or chromite, which occurs in the Umls' and Asia Minor, California. Australia, and other localities. This is magnetic iron ore, in which the ferric oxide is rel by chronic oxide, its composition being Chrome inon ore crystallisee in octahedra of six gr. 41 it has a feeble metallic lustre, is of a gmyieh-hlack colour, and gives a brown powder. It is very ieehly acted on by acids, but when fund with potassium acid mlphete it gim a soluble mm, which contains a chromic salt, besides potnninm sulphate and terms sulphate. In practice the treatment of chrome iron ore is mainly carried on for the preparation of chromite; and not of chromic alts, and therefore we will trace the history of the element by beginning with chromic acid, and especially with the working up of the chrome iron ore into potanimn diamante, u the most common salt of this acid. It must be merited that ohmic anhydride, Cr0,, is only obtained in an anhydrous state, and is distinguished for its capacity (or easily giving mhydwultt with the elhalis, containing one, two, and even three equivalent. Oi the anhydridetooneeqninlentoihm Thmamong the potassium salts there is known the normal or yellow chromite, k,cr0'. Which corre sponds to, and is perfectly isomorphons with, potassium sulphate. Wily forms isomorphons mixtures with it, end is not thereto suitable for a pmminwhichitisneoesmrytoeepentethenltfromnmixture eontainingsnl'pham. Asia the presence of a eertaincxoessofacid, thediohmmate, k,cr,0, 2k,cro' 211k qkx in easily foamed from k,cr0', the object of the menuiteturer ia'to produce mchodichromte. Themoreooaeitoomtaimehrgerpmportionofthe elements of chronic acid than the normal nit. Finely-ground chrome.
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Paperback. Condition: New. Print on Demand. This book gives a comprehensive account of the elements of the periodic system from potassium to uranium. It explains how many of the elements in this group were discovered and the chemistry of their compounds. The author discusses topics such as the valence of manganese, the preparation of potassium permanganate, and the allotropic forms of iron. The book also provides an overview of the development of the periodic system and its importance in understanding the chemical elements. The author's clear and engaging style makes this book an indispensable resource for anyone interested in inorganic chemistry or the history of science. Its insights provide a deeper understanding of the fundamental building blocks of our world. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Seller Inventory # 9780282990527_0
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