Zn5(PO4)3Cl

Formula : Zn5(PO4)3Cl

Family: 
Phosphates
Space group: 
Monoclinic - Domatic HM symbol (m) Space Group: P 63/m 6/
Dana class: 
41.8.1.0VII - 41 Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen ; 41.8 Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen where(?)5 (XO4)3 Zq ; 41.8.1
High temperature: 
It is stable in a wide range of temperature. Its stability at room temperature is possible.
Geological context: 
Apatite is the most abundant naturally occuring phosphate on Earth. Occurs in metamorphic rocks, sedimentary environments or precipitate from hydrothermal solutions

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
647.316 -4137000 (Ref.: 76nri) Nriagu J.O., 1976, Phosphate-clay mineral relations in soils and sediments. Can. J. Earth Sci., 13, 717-736
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.
Reaction properties

Zn5(PO4)3Cl + 6H+ ⇌ Cl- + 3H2PO4- + 5Zn+2

298.15 K, 1 bar log10K: 24.84 ΔH°r: J·mol-1 (Ref.: )
T(°C) 0 25 60 100 150 200 250 300
log10K 24.84 24.84 24.84 24.84 24.84 24.84 24.84 24.84
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
24.843392 0.000000 0.000000 0.000000 0.000000