Hilgenstockite

Formula : Ca₄O(PO₄)₂

Family:

Dernière mise à jour le 25.01.2021

Individual properties (298.15 K)

M g·mol^-1	V° cm³·mol^-1	ΔGº_f J·mol^-1	ΔHº_f J·mol^-1	Sº J·mol^-1·k^-1	C_P J·mol^-1·K^-1
366.254		-4588000 (Ref.: 84vie/tar,after 71bduf)

C_P(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

Hilgenstockite + 6H⁺ ⇌ 4Ca⁺² + 2H₂PO₄^- + H₂O

298.15 K, 1 bar log₁₀K: 23.59 ΔH°_r: J·mol^-1

T(°C)	0	25	60	100	150	200	250	300
log₁₀K	23.59	23.59	23.59	23.59	23.59	23.59	23.59	23.59

log₁₀K(T) = A + B·T + C·T^-1 + D·log₁₀(T) + E·T⁻² (T in Kelvin)

A	B	C	D	E
23.593994	0.000000	0.000000	0.000000	0.000000