The higher the alkalinity is, the higher the buffering capacity against pH changes. In order to determine Alkalinity of your samples, samples will be titrated with sulfuric acid or hydrochloric acid to a certain pH end point (pH 8.3 for Phenolphthalein Alkalinity and pH 4.5 for Total Alkalinity), and the volume of the acid used for the titration will be recorded.Īlkalinity provides a buffering capacity to aqueous system. How do you calculate alkalinity in a titration? Alkalinity is sometimes incorrectly used interchangeably with basicity. Commercially, as in the swimming pool industry, alkalinity might also be given in parts per million of equivalent calcium carbonate (ppm CaCO3). Seawater amounts on average are 100-125 mg/l.Īlkalinity is usually given in the unit mEq/L (milli-equivalent per liter). The Normal amounts of Alkalinity: Fresh water amounts range from 20-200 mg/l. What is the formula for calculating alkalinity?Ĭalculating Alkalinity The calculation becomes: Alk=(1000xBxCaxCF)÷Vs or Alk (meq/L)=[1000x12mLx0.

What is the difference between phenolphthalein alkalinity and total alkalinity?.What should be adjusted first alkalinity or pH?.How do you calculate alkalinity in a titration?.Why do we determine alkalinity in water?.How do you convert bicarbonate to alkalinity?.What is the normal range of alkalinity?.What is the formula for calculating alkalinity?.

How to calculate ppm of caco3