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3. In order to get correct color matches, it is important to use the same size test tubes for
all tests in Parts I and II. Using a disposable pipet, transfer exactly 1.5 mL of the
stock 0.050 M green chloro solution to one test tube and 3.0 mL to each of two other
test tubes. Store the 3.0 mL solutions in an ice-water bath.
4. Prepare a similar but more dilute green chloro solution, about 0.010 M in the green
chloro complex, by dissolving about 33 mg of trans-[Co(en)2Cl2]Cl in 12 mL of the
0.5 M sulfuric acid solution. Again, transfer one 1.5 mL and two 3.0 mL portions of
the 0.01 M solution to separate test tubes. Store the two 3.0 mL solutions in an icebath.
5. Heat the two test tubes containing 1.5 mL of solution in a beaker of boiling water
using a hot plate for 5 to 10 minutes. This treatment will effect complete conversion
to the red aquo complex. Cool these two test tubes to room temperature, and to each
solution add 1.5 mL from the two stock solutions you prepared containing the...
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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