HW2 - Jan 28th 2011 Zexi Liu 53:050 Homework Assignment#2 1...

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Jan 28 th , 2011 Zexi Liu 53:050 Homework Assignment #2 1. Answer: a) “fishable” ( able to protect aquatic life); “swimmable” ( safe for human contact) lakes, streams and rivers. Federal Water Pollution Control Act Amendments ( Clean Water Act) initiated the requirement. b) Under the NPDES permit program, industrial facilities and POTWs (Publicly Owned Treatment Works) must receive a NPDES permit before discharging wastewater directly to surface waters. Because POTWs are direct dischargers, they must obtain and comply with a NPDES permit. This permit limits the amount of pollutants the sewage treatment plant may discharge and eventually help accomplish the “fishable and swimmable” goal. 2. Answer: Chlorine 3. Answer: a) + + C12H22O11 12O2 12CO2 11H2O b) + + + 3Cl2 6KOH 5KCl KClO3 3H2O 4. Answer: Density of water @ 30°C is 995.6502 kg/m 3 So 4.5% by weight mixture would contain: = . . %= . m 995 6502kgm3∙1m3∙4 5 44 82kg 5. Answer: b) Oxidation state: + + - 1H2 6S 2O4
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This note was uploaded on 06/03/2011 for the course 53 50 taught by Professor Parkin during the Spring '11 term at University of Iowa.

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HW2 - Jan 28th 2011 Zexi Liu 53:050 Homework Assignment#2 1...

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