What is in Seawater?
Seawater is mostly water, but with a lot of dissolved salts, or ions. Salinity in the ocean mainly comes from sodium and chloride ions. But that is not all! Below is a table of the major ions that make up seawater, these ions account for 99.8% in seawater.
Table-1
|
Symbol |
Name |
% of Ions |
mMole |
g/L |
|
Cl- |
Chloride |
55.29 |
546 |
19.353 |
|
Na+ |
Sodium |
30.74 |
469 |
10.76 |
|
Mg2+ |
Magnesium |
3.69 |
53 |
1.292 |
|
So4 -2 |
Sulphate |
7.75 |
28 |
2.712 |
|
Ca2+ |
Calcium |
1.18 |
10.3 |
0.412 |
|
K+ |
Potassium |
1.14 |
10.2 |
0.399 |
|
Total percent |
99.8 |