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The Hydration Of Normal Sodium Pyrophosphate To Orthophosphate In Varying Concentrations Of Hydrogen Ion At Forty-Five Degrees Centigrade - Couverture souple
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Synopsis
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Présentation de l'éditeur
The Hydration of Normal Sodium Pyrophosphate to Orthophosphate in Varying Concentrations of Hydrogen I on at 45 Centigrade. Since the work of Graham1 on the phosphoric acids the problem of the hydration of pyrophosphoric acid has been of interest. A part of the interest was due to the difference of opinion among chemists as to whether the hydration of metaphosphoric acid was direct to orthophosphoric acid or whether pyrophosphoric acid was formed as an intermediate product1 23 45 67. Beans and Kiehl8 showed that pyrophosphate is formed as an intermediate product in the hydration of sodium monometaphosphate to orthophosphate. Therefore to understand more fully the hydration of sodium monometaphosphate to orthophosphate it seems advisable to study the hydration of a pyrophosphate to orthophosphate under the same conditions. One difficulty encountered by previous workers on this problem was due to the lack of a suitable method for the determination of the amounts of the different phosphates present when present together. In order to study the reaction it is necessary to have a method of determining the amounts of each of the phosphates present at any given time. The first to study this problem were Andre and Berthelot5. They used a method of acidimetry to determine the amounts of each of the acids present at any definite time. They discarded this method and attempted5 to develop a gravimetric separation. In this separation they precipitated a magnesium ammonium pyrophosphate of indefinite composition by heating the solution to be analyzed, acidified with acetic acid, for three or four hours on a boiling water bath. Since temperature9 and hydrogen ion 59 both have a marked effect on the rate of hydration this method could not be applicable for a quantitative study of this hydration. No one attempted a further study of-this problem until 1909 when A bbott9 studie
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Présentation de l'éditeur
Leopold Classic Library is delighted to publish this classic book as part of our extensive collection. As part of our on-going commitment to delivering value to the reader, we have also provided you with a link to a website, where you may download a digital version of this work for free. Many of the books in our collection have been out of print for decades, and therefore have not been accessible to the general public. Whilst the books in this collection have not been hand curated, an aim of our publishing program is to facilitate rapid access to this vast reservoir of literature. As a result of this book being first published many decades ago, it may have occasional imperfections. These imperfections may include poor picture quality, blurred or missing text. While some of these imperfections may have appeared in the original work, others may have resulted from the scanning process that has been applied. However, our view is that this is a significant literary work, which deserves to be brought back into print after many decades. While some publishers have applied optical character recognition (OCR), this approach has its own drawbacks, which include formatting errors, misspelt words, or the presence of inappropriate characters. Our philosophy has been guided by a desire to provide the reader with an experience that is as close as possible to ownership of the original work. We hope that you will enjoy this wonderful classic book, and that the occasional imperfection that it might contain will not detract from the experience.
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