260
C. De Stefano· C. Foti . A. Gianguzza . D. Piazzese . S. Sammartano
Table A9.6. Apparent protonation constants' of phosphate,
5
109,8'109,82"
109,83"
di-phosphate and tri-phosphate
in synthetic sea water, at
PO!t = 25°C and at different
salinities
5
9.10
15.73
17.61
15
8.93
15.40
17.12
25
8.91
15.34
16.96
35
8.92
15.34
16.89
45
8.94
15.36
16.85
Pp;5
6.54
11.58
13.15
15
6.48
11.37
12.62
25
6.51
11.39
12.47
35
6.55
11.45
12.42
45
6.60
11.53
12.41
PP~~
5
5.79
10.29
12.06
15
5.71
9.94
11.48
25
5.75
9.91
11.34
35
5.80
9.96
11.31
45
5.86
10.04
11.32
a
.
1i+2)-. +
1i+2-JlReferto the reaction: PP(3i+l) + JH f-7 HlP(3i+ 1) .
Table A9.7. Hydrolysis constants of (CH3)xSn(4-x)+ cations at 1=0 mol 1-1 and t= 25°C
Species
I f3 a.b
09 pq
(pq)
x=l
x=2
x=3
1-1
-1.5 (12.5)b
-2.86 (11.14)
-6.14 (7.86)
1-2
-3.46 (24.54)
-8.16 (19.84)
-18.88 (9.12)
1-3
-9.09 (32.91)
-19.35 (22.65)
1-4
-20.47 (35.53)
2-2
-4.99 (23.01)
2-3
-9.06 (32.94)
2-5
-7.69 (62.31)
a ,8pq refer to the reaction: pM + qHP f-7 Mp(OH)q + rH [M = methyltin(iV) cation; charges omitted].
b In parenthesis, formation constants refer to the reaction: pM + qOH f-7 Mp(OH)q.