Lab#3 writeup - Allan Wetzel October 15, 2007 Lab #3...

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Allan Wetzel October 15, 2007 Lab #3 Writeup The purpose of this lab is to practice differentiating unknown compounds by various properties, and using the gathered data and information to identify an unknown from a list of possible compounds. Part 1 of this lab allowed us to determine which of our compounds were polar. To do this , we charged a plastic rod, so that if a polar compound was poured in a thin stream next to it, it would skew in one direction due to opposing charges. After pouring our 4 unknowns next to the pole, we discovered that 1A and 3A had no dipole moment, but 2A and 4A did. The stream of 2A had a much larger angle in the skew of the stream than 4A, so we assumed that 4A had a smaller dipole moment, and less of a difference in electro negativity. After this step we were able to divide the possible compounds between Part 2 of the experiment involved determining whether the unknown was soluble in water or not. This was very straightforward, mixed 0.5mL of an unknown with 0.5mL of water and looked to see if 2
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Lab#3 writeup - Allan Wetzel October 15, 2007 Lab #3...

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