Research on Enrichment of P₂O₅ from Low-Grade Carbonaceous Phosphate Ore via Organic Acid Solution

Table 9

ΔH^θ, ΔS^θ, and ΔG^θ of the reaction of acetic acid and fluorapatite.

Temperature (^oC)	ΔH^θ (kJ/mol)	ΔS^θ (J/mol·K)	ΔG^θ (kJ/mol)
30	52.182	−806.722	296.739
40	89.352	−686.064	304.193
50	124.269	−576.288	310.496
60	157.334	−475.505	315.748
70	189.003	−381.836	320.030