Shown below are the results of water quality analyses of Crater Lake at Mount Mazama, Oregon. If the water is treated with 40.00 mg/L of alum for turbidity coagulation, how much alkalinity will remain? Assume all the alkalinity is .
Crater Lake, Mount Mazama, Oregon
Constituent | Expressed as | Milligrams per liter |
Total hardness | CaCO3 | 28.0 |
Calcium hardness | CaCO3 | 19.0 |
Magnesium hardness | CaCO3 | 9.0 |
Total iron | Fe | 0.02 |
Sodium | Na | 11.0 |
Total alkalinity | CaCO3 | 29.5 |
Chloride | Cl | 12.0 |
Sulfate | SO4 | 12.0 |
Silica | SiO2 | 18.0 |
Total dissolved solids |
| 83.0 |
pHa | 7.2 |
aNot in mg/L.
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