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Viscosity of Supercooled Sulfuric Acid Solutions

Williams, Leah R. and Long, Forrest S. (1995) Viscosity of Supercooled Sulfuric Acid Solutions. Journal of Physical Chemistry, 99 (11). pp. 3748-3751. ISSN 0022-3654. doi:10.1021/j100011a050.

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The physical properties of supercooled sulfuric acid solutions are of interest because sulfate aerosols play a role in heterogeneous stratospheric chemistry and possibly in the nucleation of polar stratospheric cloud particles. We report measurements of the viscosity of sulfuric acid solutions at temperatures between 200 and 300 K and for concentrations between 30 and 80 wt %. These results can be used to estimate diffusion constants and to calculate nucleation rates in sulfuric acid at low temperatures. The current measurements give higher viscosities at lower temperatures than previous approximations. This in turn decreases estimated diffusion constants and nucleation rates.

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Additional Information:© 1995 American Chemical Society. Received: June 20, 1994; In Final Form: September 23, 1994. The authors acknowledge valuable discussions with D. L. Huestis, D. R. Crosley, and D. M. Golden. M. A. Tolbert suggested measuring the viscosity of a ternary solution. This research was supported by the NASA Upper Atmosphere Research Program, Contract NAS2-13479. F. S. Long was supported by the NSF Research Experience for Undergraduates Program.
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NSF Undergraduate Research ProgramUNSPECIFIED
Issue or Number:11
Record Number:CaltechAUTHORS:20180525-112156816
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Official Citation:Viscosity of Supercooled Sulfuric Acid Solutions Leah R. Williams and Forrest S. Long The Journal of Physical Chemistry 1995 99 (11), 3748-3751 DOI: 10.1021/j100011a050
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:86624
Deposited By: George Porter
Deposited On:25 May 2018 19:56
Last Modified:15 Nov 2021 20:40

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