Antimonous acid protonation/deprotonation equilibria in hydrothermal solutions to 300 °C

Details Antimonous acid protonation/deprotonation equilibria in hydrothermal solutions to 300 °C Antimonous acid protonation/deprotonation equilibria in hydrothermal solutions to 300 °C

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006gecoa..70.2298z&link_type=abstract

Geochimica et Cosmochimica Acta, Volume 70, Issue 9, p. 2298-2310.

Other

1

Scientific paper

The ultraviolet spectra of dilute aqueous solutions of antimony (III) have been measured from 25 to 300 °C at the saturated vapour pressure. From these measurements, equilibrium constants were obtained for the following reactions: H3SbO30 ⇄ H+ + H2SbO3- for which pK1 (antimonous acid) decreases from 11.82 to 9.88 over a temperature range from 25 to 300 °C and H3SbO30 + H+ ⇄ H4SbO3+ for which log Ka initially decreases from 1.38 at 22 °C with increasing temperature up to 100 °C but then increases until it reaches a value of log Ka = 1.8 at 300 °C. Unionised antimonous acid, H3SbO30, will be the dominant species responsible for antimony transport in low sulphur geothermal fluids in the Earth’s crust. In hydrothermal fluids having a high magmatic input, the low pH environment will also encourage the stability of the protonated H4SbO3+ species.

Affiliated with

Also associated with

No associations

Rating

Antimonous acid protonation/deprotonation equilibria in hydrothermal solutions to 300 °C does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Antimonous acid protonation/deprotonation equilibria in hydrothermal solutions to 300 °C, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Antimonous acid protonation/deprotonation equilibria in hydrothermal solutions to 300 °C will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1007358