Mirabilite

Formula : Na2SO4:10H2O

Family: 
Sulfates
Space group: 
Monoclinic - Prismatic HM symbol (2/m) Space Group: P 21/a
Dana class: 
29.2.2.1VI- 29 Hydrated Acid and Sulfates ; 29.2 Hydrated Acid and Sulfates where (A+)2 XO4 . x(H2O) ; 29.1.1

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
322.196 219.180 (Ref.: 63wyc) Wyckoff, R.W.G., 1963, Crystal Structures, Second edition, tome 4, Interscience Publishers, New York, p. 320-322. -3646334 (Ref.: 84har/mol) Harvie C.E., Moller N., and Weare J.H.. 1984, The prediction of mineral solubilities in natural waters: The Na-K-Mg-Ca-H-Cl-SO4-OH-HCO3-CO3-CO2-H2O system to high ionic strengths at 25 C. Geochimica Cosmochimica Acta, 48, pp. 723-751. -4327791 (Ref.: Internal calculation) 591.900 (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. 574.46 (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.
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.
574.46 0.00 0.00 (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.
Reaction properties

Mirabilite ⇌ 2Na+ + SO4-2 + 10H2O

298.15 K, 1 bar log10K: -1.22 ΔH°r:79471 J·mol-1 (Ref.: Internal calculation)
T(°C) 0 25 60 100 150 200 250 300
log10K -2.50 -1.22 0.25 1.64 3.05 4.15 4.93 5.28
log10K(T) = A + B·T + C·T-1 + D·log10(T) + E·T−2 (T in Kelvin)
A B C D E
-1588.364560 -0.231776 84305.191597 578.223529 -5092578.362756