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In these times of environmental awareness and concern, it is very important that you
become experienced with water analysis. As you know, Davis is not known for the
exceptional quality of its water. In fact, let’s face it, the water here tastes pretty bad!
What is in it? That would be a good question to try to answer if we had lots of time and
if we wanted to spend it doing an experiment in qualitative analysis. However, for now
we want to learn more about quantitative analysis. It is well known that ground water
commonly contains a large amount of two metal ions, calcium and magnesium. The term
"hard water" refers to the presence of these two metals. These metals give the water a
rather harsh taste and will also cause the white deposits often observed on faucets or as
"lime" deposits in bathtubs. These white deposits are generally metal carbonates. In
addition, these two metal ions will precipitate soaps, leaving the unsightly bathtub scum
that you may have observed. Perhaps you have had the experience of living or visiting a
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This note was uploaded on 04/09/2013 for the course CHE CHE 2C taught by Professor Nasiri during the Spring '07 term at UC Davis.
- Spring '07