B(OH)4-

Formula : B(OH)4-

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
78.840 25.802 (Ref.: 95pok/sch) Pokrovski G.S., Schott J. and Sergeyev A.S., 1995. Experimental determination of the stability constants of NaSO4minus and NaB (OH)40 in hydrothermal solutions using a new high-temperature sodium-selective glass electrode - Implications for boron isotopic fractionation. Chemical Geology, 124, p. 253-265. -1153152 (Ref.: 95pok/sch) Pokrovski G.S., Schott J. and Sergeyev A.S., 1995. Experimental determination of the stability constants of NaSO4minus and NaB (OH)40 in hydrothermal solutions using a new high-temperature sodium-selective glass electrode - Implications for boron isotopic fractionation. Chemical Geology, 124, p. 253-265. -1344086 (Ref.: Internal calculation) 102.508 (Ref.: 95pok/sch) Pokrovski G.S., Schott J. and Sergeyev A.S., 1995. Experimental determination of the stability constants of NaSO4minus and NaB (OH)40 in hydrothermal solutions using a new high-temperature sodium-selective glass electrode - Implications for boron isotopic fractionation. Chemical Geology, 124, p. 253-265. -7.07 (Ref.: 95pok/sch) Pokrovski G.S., Schott J. and Sergeyev A.S., 1995. Experimental determination of the stability constants of NaSO4minus and NaB (OH)40 in hydrothermal solutions using a new high-temperature sodium-selective glass electrode - Implications for boron isotopic fractionation. Chemical Geology, 124, p. 253-265.
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
23.0957 26.4847 15.8992 -13.5980 188.2800 -80.8767 3.7656
Reaction properties

B(OH)3 + H2O ⇌ B(OH)4- + H+

298.15 K, 1 bar log10K: -9.24 ΔH°r:14069 J·mol-1 (Ref.: 95pok/sch) Pokrovski G.S., Schott J. and Sergeyev A.S., 1995. Experimental determination of the stability constants of NaSO4minus and NaB (OH)40 in hydrothermal solutions using a new high-temperature sodium-selective glass electrode - Implications for boron isotopic fractionation. Chemical Geology, 124, p. 253-265.
T(°C) 0 25 60 100 150 200 250 300
log10K -9.51 -9.24 -9.04 -8.94 -8.94 -9.03 -9.22 -9.51
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
-498.354694 -0.075280 28167.288591 177.135219 -1886872.743142