Open AccessVapor-Liquid Equilibria for Aqueous Sulfuric Acid
Author(s) -
John Irving Gmitro,
Theodore Vermeulen
Publication year - 1963
Publication title -
osti oai (u.s. department of energy office of scientific and technical information)
Language(s) - English
Resource type - Reports
DOI - 10.2172/876220
Subject(s) - molality , sulfuric acid , partial pressure , aqueous solution , volatility (finance) , chemistry , thermodynamics , vapor phase , phase (matter) , liquidus , analytical chemistry (journal) , liquid phase , inorganic chemistry , chromatography , mathematics , organic chemistry , physics , oxygen , econometrics
The composition of the vapor phase over sulfuric acid has not been measured experimentally because of the low volatility of H{sub 2}SO{sub 4}. A method is described for calculating the partial pressures of H{sub 2}O, H{sub 2}SO{sub 4}, and SO{sub 3} based upon liquid-phase partial-molal thermodynamic quantities. Tables and graphs are provided which give the above partial pressures from -50 to 400 C at thirty-six compositions between 10 and 100 weight-percent acid
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