Marine Science Faculty Publications
Ferric Borate Formation in Aqueous Solution
Document Type
Article
Publication Date
1997
Keywords
Complexation, ferric borate, hydrolysis, iron(III), boric acid, potentiometry
Digital Object Identifier (DOI)
https://doi.org/10.1007/BF02767624
Abstract
Potentiometric analyses indicate that previous investigations have overestimated the stability of ferric borate complexes. The FeB(OH) 2+4 formation constant result obtained in the present work isBβ *1 = [FeB(OH) 2+4 ][H+][Fe3+]-1[B(OH)3]-1 = (5.4±0.3) x 10-3 at 25.0°C and 0.7 molal ionic strength. Our result indicates that solution concentrations of FeOH2+ and FeB(OH) 2+4 are approximately equal in aqueous solution for boric acid concentrations on the order of 0.3 molal. Fe(B(OH)4) +2 is a minor species in solution compared to FeB(OH)4 2+ for conditions such that [B(OH)3][H+]-1≤ 350, and ferric borate complexation is insignificant in solutions such as seawater where [B(OH)3] ≤ 4× 10-4 molal.
Was this content written or created while at USF?
Yes
Citation / Publisher Attribution
Journal of Solution Chemistry, v. 26, p. 729-734
Scholar Commons Citation
Byrne, Robert H. and Thompson, Shannon W., "Ferric Borate Formation in Aqueous Solution" (1997). Marine Science Faculty Publications. 1712.
https://digitalcommons.usf.edu/msc_facpub/1712
