Laboratory Report Sheetexperiment

I) Ozone vs. Time

I) Ozone vs. Time

Time, min

Vol. titrant, mL

O3 conc., mg/L

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II) Ozone + CH2CI2 vs. Time

Time, min

Vol. titrant, mL

O3 conc., mg/L

0

Time, min

Vol. titrant, mL

O3 conc., mg/L

0

IV) Ozone + CH2C12 + UV vs. Time

Time, min

Vol. titrant, mL

O3 conc., mg/L

0

Time, min

POSTLABORATORY PROBLEMS AND QUESTIONS

1. Discuss the results you obtained regarding how fast was the decreasing of ozone concentration under the various conditions.

2. Propose a different method for ozone quantification.

Student Comments and Suggestions

Literature References

Clesceri, L. S.; Greenberg, A.; Andrew E., Eds., Standard Methods for the Examination of Water and Waste Water, 20th ed.; American Public Health Association: Washington, D.C., 1998, Section 2, p. 42; Section 4, pp. 137-139. Roan, S. Ozone Crisis; Wiley: New York, 1989. Spiro, T. G.; Stigliani, W. M. Chemistry of the Environment, Prentice Hall: New Jersey, 1996. Sponholtz, D. J.; Walters, M. A.; Tung, J.; BeiBruno, J. J. "A Simple and Efficient Ozone Generator," J. Chem. Educ. 1999, 76, 1712-1713.

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