Pb3(PO4)2

Formula : Pb3(PO4)2

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
811.543 115.770 (Ref.: 82wag/eva,60kel) -2378297 (Ref.: 74nri) Nriagu J.O., 1974. Lead orthophosphates-IV Formation and stability in the environment. Geochimica et Cosmochimica Acta, 38, p. 887 898. -2600147 (Ref.: Internal calculation) 353.100 (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. 256.27 (Ref.: 74nau/ryz, 68,69,71,76wag/eva, 71par/wag, 60kel)
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.
256.27 0.00 0.00 (Ref.: 74nau/ryz, 68,69,71,76wag/eva, 71par/wag, 60kel)
Reaction properties

Pb3(PO4)2 + 4H+ ⇌ 2H2PO4- + 3Pb+2

298.15 K, 1 bar log10K: -5.48 ΔH°r:-2292 J·mol-1 (Ref.: Internal calculation)
T(°C) 0 25 60 100 150 200 250 300
log10K -5.55 -5.48 -5.65 -6.06 -6.79 -7.75 -8.98 -10.66
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
-2014.621178 -0.324408 110787.674036 731.229050 -6675783.697893