课程名称︰环境土壤化学 课程性质︰土壤化学，探讨土壤如何跟空气与水作用。 同时探讨水与空气在环境中的污染，如何改善等 课程教师︰李达源教授，陈佩贞助理教授。此试卷乃陈老师出题。 开课学院：农业化学系 开课系所︰大三必修 考试日期（年月日）︰Apr. 18, 2008 考试时限（分钟）：两节课中间不休息，110分钟 是否需发放奖励金：是 （如未明确表示，则不予发放） 试题 : 1. Define the following terms (20pt.) a) Nitrification b) Albedo c) Primary Air pollutants d) Secondary Air Pollutants e) BODs 2. Unit conversion. Please provide with detailed calculations. (12pt.) MW: S = 32, O = 16, N = 14 a) 2600ppm = ? mM SO4^2- b) 50 ppbv = ? molecules NO3/cm^3 c) 2500 DUs O3/1000km^2 = ? molecules O3/1000km^2 3. Draw a diagram showing the four main layers into which the atmosphere can be divided. Label the diagram to show the following. (12pt.) a) Name of each layer in Chinese and English. (4pt.) b) The distance of the two major layers closest to the Earth extend out from the Earth's surface, and label the distance of the boundary layer (3pt.) c) The change in temperatures in temperature with increasing distance from the surface of the Earth. d) Label the ozone layer. (2pt.) 4. a) List 5 important greenhouse gases that you learn IN CLASS (5pt.) b) Describe what is meant by "the atmospheric window" (5pt.) c) According the provided infrared absorption spectrum of gas X, explain which of the these absorptions of this gas is considered to cause the greenhouse effects? Why? (5pt.) 5. a) They hydroxyl radical can be formed from the photolysis of water and act as a catalyst for ozone destruction. Show these reactions. (5pt.) b) For the following reactions: (5pt.) NO2 + O3 → NO3 + O2 NO3 + hv → NO2 + O What is the catalyst? Why is it chain reaction? Write the overall reaction? 6. a) Reorganize the order of the following chemical reactions, show how tropospheric ozone is formed from the reaction of NO2 and sunlight. How many hydroxyl radicals are formed from one NO2 molecule? (5pt.) b) Which of the following HCs would react faster with hydroxyl radicals? Why? (5pt.) (1) Butane or octane (2) Benzene or xylene c) List criteria air pollutants regulated by Taiwan EPA. List three methods you can use to measure these criteria air pollutants. (5pt.) 7. Water with an alkalinity of 2.5mM has a pH of 10. Calculate [CO2], [HCO3^-] [CO3^2-] and [OH^-] in such water? (10pt.) 8. Determine pE for waste water that contains 5.0 x 10^-5 M H3AsO4 and 5.0 x 10^-7 M H3AsO3. Does this wastewater favor oxidation or reduction? (7pt.) H3AsO4 + 2H^+ 2e^- → H3AsO3 + H2O pE = 9.73 9. List three diffrerent methods for trmoving partuculate matters )PMs) from industrial emission and describe how they remove PMs. Compare the pros and cons of the three methods. (8pt.) 试卷到此为止 --

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