Page 422 -

5x 10 -3 !

3x10 -3
I
2x10-3
25-~oc \ .i{ F
lx10 -a
20°C
10°C
5oC
=.
O°C ~
v 5 x 10.4
\ x \ ,i v~-~J--.

3x 10.4

2x 10.4

1 x 10 .4
0.01 0.02 0.03 0.05 0.10 0.2 0.3 0.5 1.0 2.0
Ionic Strength
FIGURE 13.15 Ksp for CaSO4 versus ionic strength, (Adapted from DuPont Permasep Products Engi-
neering Manual, 1992.)

10X10 "9 i ~ / 10x10.6
I I I. 1112r
I I J~ lYl
5'0 x 10"9 I ~ r 5.0 x 10.6
3.0 x 10.6
3.0 x 10 "9 •
ox,o, 112" rX
2.0x10.6 oO
?
@ @
1.0xi0 "9 ; ,i j, , , , , ~r 1.0 x 10 .6 0 ~
I Jr I I
¢9
tl3 I/ I
=-
x,.
3C
o.sxlo-~ / r I IM"
0.5 x 10 .6
I lit
0.3 x 10 .9 -J~] 0.3 x 10.6
/
J
0.2 x 10 "9 0.2 x 10 .6
0.1 x 10 "9 0.1 x 10.6
0.01 0.02 0.03 0.05 0.10 0.2 0.3 0.5 1.0 2.0
Ionic Strength
FIGURE 13.16 Ksp for BaSO4 and SrSO4 versus ionic strength. (Adapted from DuPont Permasep Prod-
ucts Engineering Manual, 1992.)

13.19