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Thursday, January 14, 2016
Murder Investigation Lab
In this lab, we conducted an experiment to try to figure out the molarity and type of substance an unknown substance was, to try to figure out the murderer of Miss Scarlet. The substance was known to have been either potassium iodide or silver nitrate, and we had to mix the unknown solution with NaCl and Na2CO3, and predict the results in order to figure out which substance the murder weapon was. Then, using what we just learned in class about molarity, we had to find the molarity in order to figure out who the murderer was. The experiment was cool to watch, for the unknown substance and the sodium carbonate mixed and created a milky looking substance, then we had to drain out the excess using a Buchner funnel. Although the Buchner funnel took a while, it was cool to watch as the precipitate stayed in the filter and the excess drained out.
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It was great having a couple of Sherlock Holmes in my group to help me catch this dastardly fiend. I am glad that we were able to catch the correct culprit. Maybe our Buchner Funnel would've gone quicker if you were more skilled with the stir rod..
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