HCl/H sub 2 O solid-phase vapor pressures and HCl solubility in ice
- Univ. of Minnesota, Minneapolis (USA)
A study of the HCl/H{sub 2}O binary system at low temperatures is presented, and applications to the polar stratosphere are discussed. A phase diagram constructed for low HCl partial pressures includes the tri- and hexahydrates as well as solid solutions of HCl in ice. Results of two experiments strongly suggest that the solubility of HCl in ice is low, less than 0.01 mol % for stratospheric conditions. Previous measurements have shown HCl to be orders of magnitude more soluble in bulk ice. The nitric acid trihydrate crystal, which is formed above ice condensation temperatures in the polar stratosphere, shows a much greater ability to absorb HCl than does pure ice for HCl pressures characteristic of the stratosphere.
- OSTI ID:
- 6375228
- Journal Information:
- Journal of Physical Chemistry; (USA), Journal Name: Journal of Physical Chemistry; (USA) Vol. 94:11; ISSN 0022-3654; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
540110*
ATMOSPHERIC CHEMISTRY
BINARY MIXTURES
CHEMISTRY
DATA
DATA ANALYSIS
DISPERSIONS
EARTH ATMOSPHERE
EXPERIMENTAL DATA
HYDROCHLORIC ACID
HYDROGEN COMPOUNDS
ICE
INFORMATION
INORGANIC ACIDS
LAYERS
MEASURING INSTRUMENTS
MEASURING METHODS
MIXTURES
NUMERICAL DATA
OZONE LAYER
PHYSICAL PROPERTIES
SOLIDS
STRATOSPHERE
THERMODYNAMIC PROPERTIES
VAPOR PRESSURE