Precipitation and Dissolution Potentials
作者:
R. P. Rastogi,
R. D. Shukla,
期刊:
Journal of Applied Physics
(AIP Available online 1970)
卷期:
Volume 41,
issue 7
页码: 2787-2795
ISSN:0021-8979
年代: 1970
DOI:10.1063/1.1659316
出版商: AIP
数据来源: AIP
摘要:
Precipitation and dissolution potentials for KCl, NaCl, BaCl2, and NH4Cl have been measured with a Lindemann electrometer both in air as well as in nitrogen. The values in the latter case are lower. The electrode on which precipitation and dissolution takes place is found to be negative. The available evidence shows that static potential is developed. In order to assess the relative contributions of (i) diffusion potential, (ii) thermodiffusion potential, and (iii) zeta potential to the overall precipitation and dissolution potential, suitable experiments have been performed. Zeta potential was estimated from measurements of streaming potentials. Phase potentials have also been measured. It appears that the major contribution to the observed precipitation and dissolution potential arises due to unequal mobilities of the two ions being incorporated into or detached from the crystal lattice. The temperature, concentration, and time dependence of the various potentials have also been investigated.
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