CaHPO4

Formula : CaHPO4

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
136.057 -1665014 (Ref.: 68chu/mar) Chughtai A., Marshall R., Nancollas G.H., 1968, Complexes in calcium phosphate solutions. J. Phys. Chem., 72, 208-211 -1828035 (Ref.: Internal calculation) 11.550 (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- ⇌ CaHPO4 + H+

298.15 K, 1 bar log10K: -4.37 ΔH°r:17564 J·mol-1 (Ref.: Internal calculation)
T(°C) 0 25 60 100 150 200 250 300
log10K -4.64 -4.37 -4.03 -3.69 -3.30 -2.90 -2.43 -1.78
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
917.832122 0.144563 -50236.502229 -334.757208 2802397.619768