On the Specific Gravities of Niobium and Tantalum Pentoxides PDF ePub eBook

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On the Specific Gravities of Niobium and Tantalum Pentoxides free pdf Excerpt from On the Specific Gravities of Niobium and Tantalum Pentoxides The original purpose of this investigation was to find a method for the determination of tantalum and niobium, without separation, based on the specific gravity of the combined oxides. Until recently, the only available method for their determination was by fractional crystallization of the potassium double fluorides. In this method the mixed hydroxides of the elements are obtained by fusion with potassium bisulphate and boiling the melt with water. After removal of impurities and thorough washing, these hydroxides are dissolved in hydrofluoric acid, potassium fluoride added and the solution evaporated until the more insoluble tantalum salt separates. It is a difficult matter to free this salt from the mother liquor containing the niobium without, at the same time, dissolving some of the tantalum salt. That the method is inaccurate and unreliable, is shown by Metzger and Taylor. 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.

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Details Book

Author : Maurice Allison Lamme
Publisher : Forgotten Books
Data Published : 27 September 2015
ISBN : 1332173144
EAN : 9781332173143
Format Book : PDF, Epub, DOCx, TXT
Number of Pages : 44 pages
Age + : 15 years
Language : English
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