HUO₄^-

Formula : HUO₄^-

Dernière mise à jour le 25.01.2021

Individual properties (298.15 K)

M g·mol^-1	V° cm³·mol^-1	ΔGº_f J·mol^-1	ΔHº_f J·mol^-1	Sº J·mol^-1·k^-1	C_P J·mol^-1·K^-1
303.035	18.255 (Ref.: 97bsho/sas) Shock, E.L., Sassani, D.C., and Betz, H., 1997, Uranium in geologic fluids: Estimates of standard partial molal properties, oxidation potentials, and hydrolysis constants at high temperatures and pressures: Geohim. Cosmo. Acta, v. 61, no. 20, pp. 4245-426	-1317123 (Ref.: 97bsho/sas) Shock, E.L., Sassani, D.C., and Betz, H., 1997, Uranium in geologic fluids: Estimates of standard partial molal properties, oxidation potentials, and hydrolysis constants at high temperatures and pressures: Geohim. Cosmo. Acta, v. 61, no. 20, pp. 4245-426	-1518583 (Ref.: Internal calculation)	-84.517 (Ref.: 97bsho/sas) Shock, E.L., Sassani, D.C., and Betz, H., 1997, Uranium in geologic fluids: Estimates of standard partial molal properties, oxidation potentials, and hydrolysis constants at high temperatures and pressures: Geohim. Cosmo. Acta, v. 61, no. 20, pp. 4245-426	100.40 (Ref.: 97bsho/sas) Shock, E.L., Sassani, D.C., and Betz, H., 1997, Uranium in geologic fluids: Estimates of standard partial molal properties, oxidation potentials, and hydrolysis constants at high temperatures and pressures: Geohim. Cosmo. Acta, v. 61, no. 20, pp. 4245-426

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
20.6539	17.8858	17.0025	-12.3662	154.5360	6.1388	8.0914

Reaction properties

UO₂⁺² + 2H₂O ⇌ HUO₄^- + 3H⁺

298.15 K, 1 bar log₁₀K: -19.23 ΔH°_r:72175 J·mol^-1

T(°C)	0	25	60	100	150	200	250	300
log₁₀K	-20.41	-19.23	-17.93	-16.81	-15.80	-15.09	-14.61	-14.35

log₁₀K(T) = A + B·T + C·T^-1 + D·log₁₀(T) + E·T⁻² (T in Kelvin)

A	B	C	D	E
-319.398274	-0.054286	13137.453478	114.692702	-1023354.360929