H2AsO3-

Formula : H2AsO3-

Dernière mise à jour le 25.01.2021

THERMODYNAMICS

Individual properties (298.15 K)
M
g·mol-1
 V°
cm3·mol-1
 ΔGºf
J·mol-1
 ΔHºf
J·mol-1
 Sº
J·mol-1·k-1
 CP
J·mol-1·K-1
124.936 47.772 (Ref.: 05bes/app) Bessinger, B. and Apps, J.A., 2005. The Hydrothermal Chemistry of Gold, Arsenic, Antimony, Mercury and Silver. Report LBNL-57395, 52 p. -586969 (Ref.: 05bes/app) Bessinger, B. and Apps, J.A., 2005. The Hydrothermal Chemistry of Gold, Arsenic, Antimony, Mercury and Silver. Report LBNL-57395, 52 p. -709131 (Ref.: Internal calculation) 129.704 (Ref.: 05bes/app) Bessinger, B. and Apps, J.A., 2005. The Hydrothermal Chemistry of Gold, Arsenic, Antimony, Mercury and Silver. Report LBNL-57395, 52 p. 191.70 (Ref.: 05bes/app) Bessinger, B. and Apps, J.A., 2005. The Hydrothermal Chemistry of Gold, Arsenic, Antimony, Mercury and Silver. Report LBNL-57395, 52 p.
HKF coefficients
a1·10
J·mol-1·bar-1
 a2·10-2
J·mol-1
 a3
J·K·mol-1·bar-1
 a4·10-4
J·K·mol-1
 c1
J·mol-1·K-1
 c2·10-4
J·K·mol-1
 ω·10-5
J·mol-1
35.9200 55.1600 2.4900 -13.9100 173.0000 23.1000 3.4300
Reaction properties

H2AsO4- ⇌ H2AsO3- + 0.5O2

298.15 K, 1 bar log10K: -30.57 ΔH°r:194451 J·mol-1 (Ref.: Internal calculation)
T(°C) 0 25 60 100 150 200 250 300
log10K -33.61 -30.57 -26.90 -23.39 -19.77 -16.76 -14.19 -11.92
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
293.268579 0.048837 -28918.064404 -104.086249 1435782.100323