Chemical Thermodynamics of Tin - Volume 12 - OECD Nuclear ...

160
VIII Group 17 (halogen) compounds and complexes
Figure VIII-10: Solubility isotherm in the system SnF 2 -HF-H 2 O at t = 0 °C (:
SnF 2·H 2 O; : SnF 2 ).
90
80
m(SnF 2
)/mol·kg –1 H 2
O
70
60
50
40
30
20
10
0
0 5 10 15 20 25 30 35 40 45 50
m(HF)/mol·kg –1 H 2
O
Figure VIII-11: Solubilities in the system SnF 2 -HF-H 2 O at different temperatures. The
experimental data are reported in Table A-17. The solubility range for t = 5 to 30 °C is
ο
shown by the shaded area; arrows point to calculated solublities with ΔfG m
of SnF 2 (s)
as given. (: SnF 2·H 2 O at 0 °C; : SnF 2 at 0 °C; : SnF 2 at 5 °C;: SnF 2 at
9.9 °C;: SnF 2 at 30 °C;: SnF 2 at 15.4 °C;: SnF 2 at 20 °C).
10
9
– 638 kJ·mol –1
m(SnF 2
)/mol·kg –1 H 2
O
8
7
6
5
4
3
2
1
– 639 kJ·mol –1
– 640 kJ·mol –1
0
0 5 10 15 20 25 30 35 40 45 50
m(HF)/mol·kg –1 H 2
O
CHEMICAL THERMODYNAMICS OF TIN, ISBN 978-92-64-99206-1, © OECD 2012