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The stabilities of secondary tin minerals. Part 2*: The hydrolysis of tin(II) sulphate and the stability of Sn3O(OH)2SO4

Published online by Cambridge University Press:  05 July 2018

R. Edwards ,
R. D. Gillard  and
P. A. Williams
R. Edwards
Affiliation:
School of Chemical and Physical Sciences, Liverpool John Moores University, Byrom Street, Liverpool, L3 3AF, UK
R. D. Gillard
Affiliation:
Department of Chemistry, University of Wales, Cardiff, P.O.Box 912, Cardiff CF1 3TB, UK
P. A. Williams
Affiliation:
School of Chemistry, University of Western Sydney, Nepean, P.O.Box 10, Kingswood, NSW 2750, Australia
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Abstract

Tritin(II)dihydroxyoxosulphate, Sn3O(OH)2SO4, is a rare corrosion product found on the surfaces of certain tin alloys. A new synthesis based on the hydrolysis of SnSO4 is described. The stability constant determination of Sn3O(OH)2SO4,s, at 298.2K and 105Pa is determined using direct measurements via electrodes, of the activities of tin(II) and sulphate ions. ΔfG0(298.2K) is equal to −1563.1 ± 0.9 KJ mol−1.

Keywords

tin mineralsstabilitytritin(II) dihydroxyoxosulphate
Type
Mineralogy
Information
Mineralogical Magazine , Volume 60 , Issue 400 , June 1996 , pp. 427 - 432
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1996

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