Calcium
•
NSW:
410 ppm
•
Exists almost exclusively as calcium ion,
some may be chelated to certain organic
molecules.
•
Ca
++
+ CO
3
--
= CaCO
3
•
K
sp
= [Ca][CO
3
]
•
K
sp
> [Ca][CO
3
] (undersaturated)
•
K
sp
< [Ca][CO
3
] (supersaturated)
