Chemistry 2210A/B Lecture Notes - Lecture 2: Stoichiometry, Polyvinyl Chloride, Mecha

• School: Western University
• Department: Chemistry
• Course: Chemistry 2210A/B
• Professor: Keith Griffiths

Document Summary

Chapter 2: the ozone holes: an ozone hole occurs when [ozone] in lower stratosphere (where most, not all ozone is) goes to almost 0 for some time, most dramatic over the south pole during the spring season. It looks at a column and integrates all of the ozone in that column from ground level to atmosphere. Take imaginary column and look up and take all ozone molecules and bring them down. Characteristic ozone hole: very low overhead ozone occurs over the south pole, where levels usually are highest, happens in september-october, which is early spring in antarctica; this is the season when maximum polar [ozone] normally occurs. + hno3 (formed from oh + no2 gas) 2: the unusual is the amount and the mechanism. 3: destruction of ozone by cl follows, mainly by mech #2 in lower strato, oh radical formed, causes dip in ozone in late spring (normal).