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

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 abwe. Conc. Conc., Cation mg/L Anion mg/L Co? 822 HCO; 220.0 Mg2 17.9 S02 98.3 d- 78.0 15.5 NO; No 46.4 K 25.6 Solution 1. Prepare a cation-anion balance. Conc., mg/ Conc., mg/ Cation mg/L meq meq/L Anion mg/l meq meq/L 822 20.046 4.10 HCO, 220 61.02 3.61 Mg2+ 17.9 12.15 1 47 SO? 98.3 48.03 2.05 Na 46.4 23.00 2.02 CH 78.0 35.45 2.20 K+ 15.5 39.10 0.40 NO; 25.6 62.01 0.41 cations 7.99 S onions 8.27 Eq weight = molecular weight in grams/Z For calcium, en wit 4008/2 = 20.04 g/eq or 20.04 mg/mea 2. Check the accuracy of the cation-anion balance using Eq. (2-5). cations - anions Percent difference - 100 cations + anions 7.99 - 8.27 Percent difference = -1.72% 7.99 + 8.27 - 100 X