**True or False**1. Chlorine demand is the difference between total chlorine and free chlorine.2. In raw wastewater samples, most of nitrogen is in the form of nitrate.3. If 10 mg/L of NH₃-N is converted to nitrate, the nitrate concentration is 10 mg/L as N.4. Free chlorine consists of hypochlorous acid and hypochlorite.5. Chloramines is a weaker disinfectant than free chlorine.6. Na₂HPO₄ contributes to the orthophosphates.7. For phosphorus analysis, the purpose of the autoclave is to kill the phosphorus bacteria which interferes colorimetric analysis.8. Chloride is an effective disinfectant for water and wastewater treatment.9. "Crown" corrosion is caused by the corrosive action of H₂SO₄.10. Breakpoint chlorination can be used for removal of ammonia.

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4. True or False (1) Chlorine demand is the difference between total chlorine and free chlorine (2) In raw wastewater samples, most of nitrogen is in the form of nitrate. (3) If 10 mg/L of NH3-N is converted to nitrate, the nitrate concentration is 10 mg/L as N. (4) Free chlorine consists of hypochlorous acid and hypochlorite. (5) Chloramines is a weaker disinfectant than free chlorine.

4. True or False (1) Chlorine demand is the difference between total chlorine and free chlorine (2) In raw wastewater samples, most of nitrogen is in the form of nitrate. (3) If 10 mg/L of NH3-N is converted to nitrate, the nitrate concentration is 10 mg/L as N. (4) Free chlorine consists of hypochlorous acid and hypochlorite. (5) Chloramines is a weaker disinfectant than free chlorine.

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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