General Information: There are
several opportunities in Chapter 6 for developing algorithms for solving
problems. There are many more opportunities for highly provocative
discussions. We will solve some "number crunching" problems and
consider some more "provocative issues" in particular. You will be able
to find a tremendous amount of material on Acids, Bases and Acid
Rain on the Web. This page was prepared to serve as a launch point as you prepare for the group discussion questions. You will find helpful material on the Chemistry in Context Site. Other useful sites are included as direct links below. Remember to document your sources on any group or individual work you turn in for a grade. Note thae due dates for
the assignments. Good luck! If you have questions ....
"Acid Rain Radio Interview"
(Consider This 6.11, 6.20, 6.21 & 6.24) -- Beginning with section 6.6 (through section 6.13) we will begin to understand what causes acid rain and explore some of the consequences. It is possible to collect data (like that displayed in figure 6.11 and 6.12) that can help scientists understand these causes. The links for 6.11 Consider This: " The Rain in Maine (...
or Texas, or Alabama, or ...)" and 6.20 Consider This: "Acid Rain Around the Globe" at the Chemistry in Context web site are good resources with
useful information on acid rain (and pollutant) levels in the US and other
highly affected areas of the world. On Wednesday, November 19 you will
have a chance to demonstrate how well you understand the connection between
either smoke stack emissions or car exhaust and the occurrence of acid
rain. In preparation, look over the information presented in Figure 6.4 and one of the web sites listed at the Chemistry in Context web site.
In preparation, you may want to distribute the research effort among different members
of the group. The class activity will bemuch more meaningful if
you do the research before coming to class. In your
Journal jot down your answers to the following questions. We'll
discuss these in class.
Use figure 6.4 to identify the parts of the US having precipitation with the lowest pH (most acidic) and highest pH (least acidic).
According to figure 6.12, which areas of the country have the highest emission of SO2 and NO2?
Finally, after reviewing the results of your research
Suggest some possible reasons for the high emissions of SO2
and NO2 in these areas of the US and Europe.
Having examined these data, can you describe the correlation that
exists between wither high SO2 or NO2?
emission and acid rain?
Journal Entry: Emissions and Acid Rain
-- Consider This 6.28, CT 6.30 & CT 6.31 -- What impact do the
emissions from coal fired power plants have on the acidic precipitation in a
certain area of the country? What about trucks and heavy equipment that
run on diesel fuel ?What is being done to reduce the emissions? Section
6.14 discusses the costs of cleaning up/reducing emissions and presents some
of the approaches used (successfully and not so successfully). A little
research, as directed by CT 6.28, CT 6.30 and CT 6.31 will give you more
information. Write a brief summary of your findings (for all three) as your
Journal entry for the week of November 17, 2008.
Solving Acid/Base Problems: We can use some of the problem solving strategies we developed in Chapter 5 to lean about aqueous solutions of acids and bases. We'll use YT 6.2, 6.4 - 6.7, 6.9 and CT 6.8 when we discuss Acids, bases & pH on Friday, November 14. You may find it helpful to work these as you read sections 1 - 4. As a double check, prepare EoC problems 4 - 10, 14-16, 19 for homework due Monday, November 17, 2008.