THE CONDENSATION AND SUBLIMATION OF CO2 WITH H2O: CARBONIC ACID ON MARS

• Main Authors: Harrison,Halstead, Scattergood,D. M., Shupe,M. R.
• Other Authors: BOEING SCIENTIFIC RESEARCH LABS SEATTLE WASH GEO-ASTRO PHYSICS LAB
• Format: Text
• Language: English
• Published: 1967
• Subjects: Astrophysics; (*CONDENSATION; MARS(PLANET)); (*ASTROPHYSICS; *MARS(PLANET)); CARBON DIOXIDE; HEAT OF SUBLIMATION; WATER; LOW TEMPERATURE; SOLIDIFIED GASES; Carbonic acid
• Online Access: http://www.dtic.mil/docs/citations/AD0661385; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0661385

The condensation and sublimation of mixtures of CO2 with H2O have been studied at temperatures between 80 and 230 K. Evidence is presented for the existence of metastable, solid-phase H2O.CO2. With near-equilibrium condensation the measured heats of sublimation of CO2 and H2O are independent of the mixing ratio; it is therefore unlikely that CO2 and H2O will co-precipitate on Mars at temperatures appreciably higher than required for CO2 to condense alone. (Author)