Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1774173 | Icarus | 2010 | 8 Pages |
Abstract
The radiation chemistry, thermal stability, and vapor pressure of solid-phase carbonic acid (H2CO3) have been studied with mid-infrared spectroscopy. A new procedure for measuring this molecule’s radiation stability has been used to obtain intrinsic IR band strengths and half-lives for radiolytic destruction. We report, for the first time, measurements of carbonic acid’s vapor pressure (0.290–2.33 × 10−11 bar for 240–255 K) and its enthalpy of sublimation (71 ± 9 kJ mol−1). We also report the first observation of a chemical reaction involving solid-phase carbonic acid. Possible applications of these findings are discussed, with an emphasis on the outer Solar System icy surfaces.
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Earth and Planetary Sciences
Space and Planetary Science
Authors
Z. Peeters, R.L. Hudson, M.H. Moore, Ariel Lewis,