Activities and vapor pressures of aqueous sulfuric acid solutions

Conference · Tue Apr 01 04:00:00 EST 1986 · Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States)

OSTI ID:5432024

Bolsaitis, P

A quantitative interpretation of the conditions leading to the formation of sulfuric acid in whatever system requires the knowledge of the thermodynamic properties of aqueous sulfuric acid solutions under the conditions of temperature and partial pressures at which the liquid phase is likely to nucleate. Surprisingly, in the light of the importance of sulfuric acid in industrial technology, such data is scarce and largely inconsistent. This problem has been recognized by authors who have tried to generalize the representation of thermodynamic properties of aqueous sulfuric acid solutions through correlations as well as those who have attempted to use available data and correlations to arrive at quantitative estimates of rates of formation of sulfuric acid in the atmosphere. The data specifically required are the vapor pressures of sulfuric acid in equilibrium with aqueous solutions of the acid both as a function of temperature and of liquid phase composition. In the present paper a thorough review, thermodynamic consistency test and cross-correlation of available activity and vapor pressure data is made to arrive at 'best estimates' of activities and vapor pressures of aqueous sulfuric acid over the entire concentration range and temperatures between 25/sup 0/C and 320/sup 0/C.

• Research Organization: Energy Lab., Massachusetts Institute of Technology, Cambridge, MA 02139
• OSTI ID: 5432024
• Conference Information: Journal Name: Am. Chem. Soc., Div. Pet. Chem., Prepr.; (United States) Journal Volume: 31:2
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACTIVATION ENERGY
AQUEOUS SOLUTIONS
ATMOSPHERIC CHEMISTRY
CHEMICAL REACTION KINETICS
CHEMISTRY
DATA ANALYSIS
DISPERSIONS
ENERGY
EQUILIBRIUM
FLUIDS
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
INORGANIC ACIDS
KINETICS
LIQUIDS
MEDIUM TEMPERATURE
MIXTURES
NUCLEATION
PARTIAL PRESSURE
PHASE STUDIES
PHYSICAL PROPERTIES
QUANTITY RATIO
REACTION KINETICS
SOLUTIONS
SULFURIC ACID
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES
VAPOR PRESSURE