Analysis of a given water sample gave the following results: Ca(HCO3)2 = 40.5 ppm, Mg(HCO3)2 = 36.5 ppm, MgSO4= 30 ppm, CaSO4 = 34 ppm, CaCl₂ = 27.75 ppm and NaCl = 10 ppm. a) Give values of temporary and permanent hardness in ppm CaCO3 equivalent and ° Clark. b) Calculate the amount of lime and soda used for softening 20,000 L of water. Given purity of lime is 84% and purity of soda is 92%. c) Calculate the volume of 0.01 (M) EDTA required to titrate 10 mL of same water sample using EBT as indicator. d) The hardness of 15,000 L of above water sample was completely removed by passing it through a zeolite softener. The zeolite softener required 100 L of NaCl solution for regeneration. Calculate the concentration of the NaCl solution.

Analysis of a given water sample gave the following results: Ca(HCO3)2 = 40.5 ppm, Mg(HCO3)2 = 36.5 ppm, MgSO4= 30 ppm, CaSO4 = 34 ppm, CaCl₂ = 27.75 ppm and NaCl = 10 ppm. a) Give values of temporary and permanent hardness in ppm CaCO3 equivalent and ° Clark. b) Calculate the amount of lime and soda used for softening 20,000 L of water. Given purity of lime is 84% and purity of soda is 92%. c) Calculate the volume of 0.01 (M) EDTA required to titrate 10 mL of same water sample using EBT as indicator. d) The hardness of 15,000 L of above water sample was completely removed by passing it through a zeolite softener. The zeolite softener required 100 L of NaCl solution for regeneration. Calculate the concentration of the NaCl solution.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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