Chemistry Colloquium

"Acid Dissociation at the Surfaces of Salty Glycerol and Water:"

Presented by Professor Gilbert Nathanson, University of Wisconsin, Dept. of Chemistry

Wednesday, April 29, 2009, 11:00 am — Hamilton Seminar Room, Bldg. 555

Gas-liquid reactions occur widely in our lives, including processes in atmospheric aerosols, the commercial production of sulfuric acid, and gas transport at the air/lung interface. We have continually refined our molecular view of these interfacial interactions as new computational and experimental tools have become available. In this talk, I will describe gas-liquid scattering experiments between gaseous acids such HCI and protic solvents such as salty glycerol and salty water. These studies lead to a detailed picture of the ways in which impinging gas molecular bounce off, react, and dissolve in liquids. In particular, we identify an ultrafast DCI-HCI proton exchange at the surface of glycerol that is catalyzed by alkali halide salts. We have recently begun searching for this interfacial exchange reaction in cold salty water.

Hosted by: Gregory Hall

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