Blog Post #5
I printed out the lab procedure for the final lab of the acids-base unit and almost had a slight panic attack. It said 'write your procedure here' and just gave you the materials you'd be using for the lab. However the procedure was the same as the 'Percent Acetic Acid' Lab, so it was fairly easy to then come up with the lab procedure.
While actually going through with the lab, the unknown acid we had acquired would not dissolve just by swirling it in the distilled water, we then had to use hot plates. After almost what seemed like 20 minutes trying to get .4 grams of the unknown acid to break down we were finally able to then titrate our acid. After about three trials of our standardization of KHP and three trials of the unknown acid, we decided to then calculate what our percent error would be, that way we could tell if we were close or not. Colette and I were able to garner a .8% error which was far better than our acetic acid lab.
Turns out, the unknown acid was the aspirin we had made earlier in the school year.
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