Carry out all the missing steps in example 2.2 and show your own solution.

how does he has answered it in this way?

EXAMPLE 2-2 Checking the Accuracy of Analytical Measurements The following analysis has been completed on a filtered effluent, from an extended aeration wastewater-treatment plant, that is to be used for landscape watering. Check the accuracy of the analysis to determine if the analysis is sufficiently accurate, based on the criteria given above. Conc., mg/L Conc., mg/L Cation Anion Ca2+ 82.2 17.9 Mg? Na HCO3 S02 Cl- NO; 220.0 98.3 78.0 25.6 46.4 K 15.5 Solution 1. Prepare a cation-anion balance. Conc., mg/ mg/ meq Conc., mg/L Cation mg/L meq/L Anion meq meq/L Ca2+ 82.2 17.9 46.4 15.5 Mg2+ 20.046 12.15 23.00 39.10 cations 4.10 1 47 2.02 0.40 7.99 HCO; SO? Cl NO; 220 98.3 78.0 Nat R+ 3.61 2.05 2.20 0.41 8.27 61.02 48.03 35.45 62.01 nions 25.6 Eq weight = molecular weight in grams/Z bFor colcium, eg w = 40.08/2 = 20.04 g/eq or 20.04 mg/me