CATIONS |
Ion
Formula |
Ionic
Weight |
Equivalent Weight |
| Alumunium |
A1+++ |
27.0 |
9.0 |
| Ammonium |
NH4+ |
18.0 |
18.0 |
| Calcium |
CA++ |
40.1 |
20.0 |
| Hydrogen |
H+ |
1.0 |
1.0 |
| Ferrous Iron |
Fe++ |
55.8 |
27.9 |
| Magnesium |
Mg++ |
24.3 |
12.2 |
| Manganese |
Mn++ |
54.9 |
27.5 |
| Postassium |
K+ |
39.1 |
39.1 |
| Sodium |
Na+ |
23.0 |
23.0 |
| |
| ANIONS |
| |
| Bicarbonate |
NCO3- |
61.0 |
61.0 |
| Chloride |
CO3- |
60.0 |
60.0 |
| Fluoride |
F- |
19.0 |
19.0 |
| Nitrate |
NO3- |
62.0 |
62.0 |
| Hydroxide |
OH- |
17.0 |
17.0 |
| Phosphate (tribasic) |
PO4-- |
95.0 |
31.7 |
| Phosphate (dibasic) |
HPO4-- |
96.0 |
48.0 |
| Phosphate (monobasic) |
H2PO4- |
97.0 |
97.0 |
| Sulphate |
SO4-- |
96.1 |
48.0 |
| Sulphite |
SO3-- |
80.1 |
40.0 |
| COMPOUNDS |
Formula |
Molecular
Weight |
Equivalent
Weight |
| Alumunium hydroxide |
Al(OH)3 |
78.0 |
26.0 |
| Alumunium sulphate |
Al2(SO4)3 |
342.0 |
57.0 |
| Alumina |
Al2O3 |
102.0 |
17.0 |
| Calcium bicarbonate |
Ca(HCO3)2 |
162.1 |
81.1 |
| Calcium carbonate |
CaCO3 |
100.1 |
50.1 |
| Calcium chloride |
CaCl2 |
111.0 |
55.5 |
| Calcium hydroxide (pure) |
Ca(OH)2 |
74.1 |
37.1 |
| Calcium hydroxide (90%) |
Ca(OH)2 |
-- |
41.1 |
| Calcium sulphate (anhydrous) |
CaSO4 |
136.2 |
68.1 |
| Calcium sulphate (gypsum) |
CaSO4.2H2O |
172.2 |
86.1 |
| Calcium phosphate |
Ca3(PO4)2 |
310.3 |
51.7 |
| Disodium phosphate |
Na2HPO4.12H2O |
358.2 |
119.4 |
Disodium phosphate
(anhydrous) |
NaHPO4 |
142.0 |
47.3 |
| Ferric oxide |
Fe2O3 |
159.6 |
26.6 |
| Iron oxide (magnetic) |
Fe3O4 |
321.4 |
- |
| Ferrous sulphate (copperas) |
FeSO4.7H2O |
278.0 |
139.0 |
| Magnesium oxide |
MgO |
40.3 |
20.2 |
| Magnesium bicarbonate |
Mg(HCO3)2 |
146.3 |
73.2 |
| Magnesium carbonate |
MgCO3 |
84.3 |
42.2 |
| Magnesium chloride |
MgCl2 |
95.2 |
47.6 |
| Magnesium |
Mg(OH)2 |
58.3 |
29.2 |
| Magnesium phosphate |
Mg3(PO4)2 |
263.0 |
43.8 |
| Magnesium sulphate |
MgSO4 |
120.4 |
60.2 |
| Monosodium phosphate |
NaH2PO4.H2O |
138.1 |
46.0 |
Monosodium phosphate
(anhydrous) |
NaH2PO4 |
120.1 |
40.0 |
| Metaphosphate |
NaPO3 |
102.0 |
34.0 |
| Sodium aluminate |
Na2Al2O4 |
164.0 |
27.3 |
| Sodium bicarbonate |
NaHCO3 |
84.0 |
84.0 |
| Sodium carbonate |
Na2CO3 |
106.0 |
53.0 |
| Sodium cholride |
NaCl |
58.5 |
58.5 |
| Sodium hydroxide |
NaOH |
40.0 |
40.0 |
| Sodium nitrate |
NaNO3 |
85.0 |
85.0 |
| Sodium sulphate |
Na2SO4 |
142.0 |
71.0 |
| Sodium sulphite |
Na2SO3 |
126.1 |
63.0 |
| Trisodium phosphate |
Na3PO4.l2H2O |
380.2 |
126.7 |
Trisodium phosphate
(anhydrous) |
Na3PO4 |
164.0 |
54.7 |
| |
| GASES |
| |
| Ammonia |
NH3 |
17 |
-- |
| Carbon Dioxide |
CO2 |
44 |
-- |
| Hydrogen |
H2 |
2 |
-- |
| Oxygen |
O2 |
32 |
-- |
| |
| ACIDS |
| |
| Carbonic |
H2CO3 |
62.0 |
31.0 |
| Hydrochloric |
HCl |
36.5 |
36.5 |
| Phosphoric |
H3PO4 |
98.0 |
32.7 |
| Sulphuric |
H2SO4 |
98.1 |
49.1 |
