CrO3(s)

Formula : CrO3

Family: 
Oxides

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
99.964 35.140 (Ref.: 92wol) Wolery T.J., 1992. EQ3/6: A software Package for Geochemical Modelling of Aqueous Systems: Package Overview and Installation Guide. Technical Report UCRL-MA-110662 PT I ed., Lawrence Livermore National Laboratory (USA). -504285 (Ref.: Internal calculation) -583100 (Ref.: 98bal/nor) Ball J.W. and Nordstrom D.K., 1998. Critical evaluation and selection of standard state thermodynamic properties for chromium metal and its aqueous ions, hydrolysis species, oxides and hydroxides. J. Chem. Eng. Data 43, p. 895-918. 67.000 (Ref.: 98bal/nor) Ball J.W. and Nordstrom D.K., 1998. Critical evaluation and selection of standard state thermodynamic properties for chromium metal and its aqueous ions, hydrolysis species, oxides and hydroxides. J. Chem. Eng. Data 43, p. 895-918. 79.17 (Ref.: 91kna/kub) O. Knacke, O. Kubaschewski and K. Hesselmann: Thermochemical Properties of Inorganic Substances, Second Edition, (Springer-Verlag, 1991)
CP(T) = a + b·T + ·c·T-2 (T in Kelvin)
a
J·mol-1·K-1
 b * 103
J·mol-1·K-2
 c * 10-5
J·K·mol-1
 Maier Kelley Ref.
71.76 87.87 -16.70 (Ref.: 91kna/kub) O. Knacke, O. Kubaschewski and K. Hesselmann: Thermochemical Properties of Inorganic Substances, Second Edition, (Springer-Verlag, 1991)
Reaction properties

CrO3(s) + H2O ⇌ CrO4-2 + 2H+

298.15 K, 1 bar log10K: -3.02 ΔH°r:-10070 J·mol-1 (Ref.: 98bal/nor) Ball J.W. and Nordstrom D.K., 1998. Critical evaluation and selection of standard state thermodynamic properties for chromium metal and its aqueous ions, hydrolysis species, oxides and hydroxides. J. Chem. Eng. Data 43, p. 895-918.
T(°C) 0 25 60 100 150 200 250 300
log10K -2.95 -3.02 -3.32 -3.84 -4.64 -5.59 -6.70 -8.10
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
-1267.455846 -0.209656 70660.775716 460.238273 -4345197.182766