Plattnerite

Formula : PbO₂

Family:

Space group:

Tetragonal - Ditetragonal Dipyramidal HM symbol (4/m 2/m 2/m) Space Group: P 4/mnm

Dana class:

4.4.1.6III - 4 Oxide Minerals ; 4.4 Simple Oxides with a cation charge of 4+ (A++++ O2) ; 4.4.1 Rutile group (Tetragonal: P4/mnm)

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
239.199	25.510 (Ref.: 82pan) Pankratz L. B., 1982, Thermodynamic Properties of Elements and Oxides (U. S. Bureau of Mines Bulletin 672, 1982, 509 p).	-215661 (Ref.: Internal calculation)	-274740 (Ref.: 98cha) Chase, M.W.J., 1998. NIST-JANAF Thermochemical Tables, Journal of Physical Chemistry Reference Data, Vol. 9, 4th Edition. National Institute of Standards and Technology, Washington DC, 1951 pp.	71.800 (Ref.: 98cha) Chase, M.W.J., 1998. NIST-JANAF Thermochemical Tables, Journal of Physical Chemistry Reference Data, Vol. 9, 4th Edition. National Institute of Standards and Technology, Washington DC, 1951 pp.	61.18 (Ref.: 98cha) Chase, M.W.J., 1998. NIST-JANAF Thermochemical Tables, Journal of Physical Chemistry Reference Data, Vol. 9, 4th Edition. National Institute of Standards and Technology, Washington DC, 1951 pp.

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.
65.63	18.99	-8.99	(Ref.: 98cha) Chase, M.W.J., 1998. NIST-JANAF Thermochemical Tables, Journal of Physical Chemistry Reference Data, Vol. 9, 4th Edition. National Institute of Standards and Technology, Washington DC, 1951 pp.

Reaction properties

Plattnerite + 2H⁺ ⇌ Pb⁺² + 0.5O₂ + H₂O

298.15 K, 1 bar log₁₀K: 6.56 ΔH°_r:-16236 J·mol^-1

T(°C)	0	25	60	100	150	200	250	300
log₁₀K	6.84	6.56	6.29	6.08	5.93	5.82	5.74	5.64

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

A	B	C	D	E
-190.488460	-0.029141	10244.404048	71.138759	-413409.817318