Vapor Pressure of Ammonia (Classic Reprint)

Vapor Pressure of Ammonia (Classic Reprint) PDF

Author: Carl S. Cragoe

Publisher: Forgotten Books

Published: 2018-02-28

Total Pages: 42

ISBN-13: 9780666613790

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Excerpt from Vapor Pressure of Ammonia The accuracy of any vapor-pressure measurements is determined, in general, by four factors; namely, (a) purity of the material, (6) certainty, pf feqmlibrium; conditions, (c) precision of the pressure-measuring instrument, and temperature measurement and control. 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.

Computation of Equilibrium Partial Vapor Pressures of Aqueous Ammonia Solutions

Computation of Equilibrium Partial Vapor Pressures of Aqueous Ammonia Solutions PDF

Author: Paul E. Field

Publisher:

Published: 2000-06-01

Total Pages: 237

ISBN-13: 9781423536055

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This report evaluates all available vapor-liquid equilibria (VLE) data from low-to-moderate pressures over the normal liquid water temperature range for the highly non-ideal aqueous ammonia solutions spanning nearly a century. The evaluation relies on all complete VLE data comprised of pressure- temperature-liquid and vapor compositions published over the last century to develop a temperature dependent model for the coefficients of the Wilson equation. The computations derived from the temperature dependent model are described by means of the program flowcharts and listings. Graphs of computed minima of the "best" Wilson coefficient pairs illustrate the statistical analysis of the experimental data. Tables of calculated deviations for three sets of Wilson coefficients corresponding to the individual and combined data sets demonstrate the utility of the model equations. Excellent agreement between the experimental and calculated liquid and vapor compositions is found for all but two data sets over the region of rapidly changing vapor composition up to 90 mole % of ammonia. This temperature dependent Wilson model offers a succinct representation of 100 years of what appear to be disparate pressure- temperature-composition VLE data.

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