Lime

Formula : CaO

Space group: 
Isometric - Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F m3m
Dana class: 
4.2.1.5 (4) Simple Oxides (4.2) with a cation charge of 2+ (A++ O) (4.2.1) Periclase group (Isometric, Fm3m)
High temperature: 
High temperature mineral around 900C and more. Also as byproduct from smelting.
Geological context: 
In blocks of calcareous lava enclosed in the lava at Mt Vesuvius.

Dernière mise à jour le 11.06.2018

THERMODYNAMICS

Individual properties (298.15 K)
M
g·mol-1
cm3·mol-1
ΔGºf
J·mol-1
ΔHºf
J·mol-1
J·mol-1·k-1
CP
J·mol-1·K-1
56.077 16.760 -603296 -634920 38.100 42.05
Reaction properties

Lime + 2H+ ⇌ Ca+2 + H2O

298.15 K, 1 bar log10K: 32.70 ΔH°r: -193910 J·mol-1
T(°C) 0 25 60 100 150 200 250 300
log10K 35.81 32.70 29.13 25.88 22.66 20.10 17.98 16.15