Na3PO4

Formula : Na3PO4

Family: 
Phosphates

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
163.941 -1788750 (Ref.: Internal calculation) -1917400 (Ref.: 74nau/ryz) Naumov G.B., Ryzhenko B.N., and Khodakovsky I.L., 1974. Handbook of Thermodynamic Data. U.S. Geol. Surv.WRD 74 001, 328 pp. 173.800 (Ref.: 67and/cou) Andon R.J.L., Counsell J.F., Martin J.F., and Mash C.J., 1967. Thermodynamic properties of phosphorus compounds: II. Low temperature heat capacity and entropy of sodium mono-, di-, and triphosphates. J. Appl. Chem., 17, 65-70 153.47 (Ref.: 67and/cou) Andon R.J.L., Counsell J.F., Martin J.F., and Mash C.J., 1967. Thermodynamic properties of phosphorus compounds: II. Low temperature heat capacity and entropy of sodium mono-, di-, and triphosphates. J. Appl. Chem., 17, 65-70
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.
153.47 0.00 0.00 (Ref.: 67and/cou) Andon R.J.L., Counsell J.F., Martin J.F., and Mash C.J., 1967. Thermodynamic properties of phosphorus compounds: II. Low temperature heat capacity and entropy of sodium mono-, di-, and triphosphates. J. Appl. Chem., 17, 65-70
Reaction properties

Na3PO4 + 2H+ ⇌ 3Na+ + H2PO4-

298.15 K, 1 bar log10K: 23.52 ΔH°r:-106220 J·mol-1 (Ref.: 74nau/ryz) Naumov G.B., Ryzhenko B.N., and Khodakovsky I.L., 1974. Handbook of Thermodynamic Data. U.S. Geol. Surv.WRD 74 001, 328 pp.
T(°C) 0 25 60 100 150 200 250 300
log10K 25.21 23.52 21.55 19.74 17.93 16.43 15.10 13.77
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
-1021.997552 -0.154316 62024.516926 371.968036 -3281372.426107