Equivalent Weights Table for the Major Cations and Anions
Cations Anions
Element Equivalent Weight Element Equivalent Weight
Calcium (Ca) 20.04 Chloride (Cl) 35.453
Magnesium (Mg) 12.1525 Carbonate (CO3) 30.004
Sodium (Na) 22.9898 Bicarbonate (HCO3) 61.016
Potassium (K) 39.098 Sulfate (SO4) 48.03
Lithium (Li) 6.94 Nitrate (NO3) 62.004
Iron (Fe) 27.97 Bromide (Br) 79.904
Manganese (Mn) 27.469 Nitrogen (N) 14.007
Strontium (Sr) 43.81 Ammonium (NH4) 18.039
Barium (Ba) 68.665 Phosphate (PO4) 31.66