CaPO4-

Formula : CaPO4-

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
135.049 -1615126 (Ref.: 68chu/mar) Chughtai A., Marshall R., Nancollas G.H., 1968, Complexes in calcium phosphate solutions. J. Phys. Chem., 72, 208-211 -1807067 (Ref.: Internal calculation) -85.450 (Ref.: 68chu/mar) Chughtai A., Marshall R., Nancollas G.H., 1968, Complexes in calcium phosphate solutions. J. Phys. Chem., 72, 208-211
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
Reaction properties

Ca+2 + H2PO4- ⇌ CaPO4- + 2H+

298.15 K, 1 bar log10K: -13.11 ΔH°r:38532 J·mol-1 (Ref.: Internal calculation)
T(°C) 0 25 60 100 150 200 250 300
log10K -13.71 -13.11 -12.39 -11.70 -10.96 -10.28 -9.57 -8.71
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
1027.772286 0.161387 -57688.437238 -376.316655 3169860.604352