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Unformatted text preview: a sample (A = - log T).
In this experiment, you will
perform flame tests on solutions containing various ions. When ionic solids are dissolved in water, they produce
aqueous cations and anions. For example, adding solid MgBr2 to water will produce ions according to the
MgBr2(s) → Mg2+(aq) + 2 Br-(aq)
cation anion Please consult your textbook for the typical charge of ions in this series of experiments. At the end of the
experiment, you will identify the ions in two solutions of unknown composition by performing flame tests and
comparing the results with your observations on the solutions of known composition. Equipment
1 Bunsen burner
1 Nichrome wire loop
1 30 mL beaker
1 spot plate
1 grease pencil
1 deionized water squirt bottle Reagents
15 mL 3 M HCl (aq)
5 drops of each known salt solution (0.1 M)
5 drops of each unknown salt solution (0.1 M) Safety
Read the procedure for operating a Bunsen burner in Lab Equipment. Know how to set it up, light it, and
operate it safely.
You will be working with hydroc...
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This document was uploaded on 01/22/2014.
- Spring '14