THE STABILITIES OF SECONDARY TIN MINERALS .2. THE HYDROLYSIS OF TIN(II) SULFATE AND THE STABILITY OF SN3O(OH)(2)SO4

Authors
EDWARDS R GILLARD RD WILLIAMS PA
Citation
R. Edwards et al., THE STABILITIES OF SECONDARY TIN MINERALS .2. THE HYDROLYSIS OF TIN(II) SULFATE AND THE STABILITY OF SN3O(OH)(2)SO4, Mineralogical Magazine, 60(400), 1996, pp. 427-432
Citations number
29
Categorie Soggetti
Mineralogy
Journal title
Mineralogical Magazine → ACNP
ISSN journal
0026461X
Volume
60
Issue
400
Year of publication
1996
Pages
427 - 432
Database
ISI
SICI code
0026-461X(1996)60:400<427:TSOSTM>2.0.ZU;2-P
Abstract
Tritin(II)dihydroxyoxosulphate, Sn3O(OH)(2)SO4, is a rare corrosion pr oduct found on the surfaces of certain tin alloys. A new synthesis bas ed on the hydrolysis of SnSO4 is described. The stability constant det ermination of Sn3O(OH)(2)SO4,s, at 298.2K and 10(5)Pa is determined us ing direct measurements via electrodes, of the activities of tin(II) a nd sulphate ions. Delta fG(0)(298.2K) is equal to -1563.1 +/- 0.9 kJ m ol(-1).