Chlorargyrite

Formula : AgCl

Family: 
Chlorides
Space group: 
Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F m3m
Dana class: 
9.1.4.1 (9) Anhydrous and Hydrated Halides(9.1) where A X(9.1.4) Dana Group
High temperature: 
Stable at room temperature.
Geological context: 
Oxidized portions of silver deposits.

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
143.320 25.730 (Ref.: 95rob/hem) Robie R.A., and Hemingway B.S., 1995. Thermodynamic properties of minerals and related substances at 298.15 K and 1 Bar (105 Pascals) pressure and at higher temperatures. U.S. Geol. Survey Bull., 2131, 461 pp. -109765 (Ref.: Internal calculation) -127010 (Ref.: 89cox/wag) Cox J.D., Wagman D.D., and Medvedev V.A., 1989. CODATA Key Values for Thermodynamics. Hemisphere Publishing Corp., New York, 279 p. 96.250 (Ref.: 89cox/wag) Cox J.D., Wagman D.D., and Medvedev V.A., 1989. CODATA Key Values for Thermodynamics. Hemisphere Publishing Corp., New York, 279 p. 50.80 (Ref.: 78rob/hem,70pan)
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.
62.28 4.15 -11.31 (Ref.: 78rob/hem,70pan)
Reaction properties

Chlorargyrite ⇌ Ag+ + Cl-

298.15 K, 1 bar log10K: -9.75 ΔH°r:65704 J·mol-1 (Ref.: 89cox/wag) Cox J.D., Wagman D.D., and Medvedev V.A., 1989. CODATA Key Values for Thermodynamics. Hemisphere Publishing Corp., New York, 279 p.
T(°C) 0 25 60 100 150 200 250 300
log10K -10.83 -9.75 -8.58 -7.58 -6.68 -6.08 -5.73 -5.66
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
-738.051537 -0.115886 37595.197748 268.545950 -2465898.946291