Well, it is a great disappointment when there is still the same brown color liquid found in my conical flask after two weeks. And this means that I have failed to obtain the crystals of piperine, just like how I failed to obtain the crystals of endo adduct in the previous experiment.
So, what might be the cause? Maybe the extraction of piperine from black pepper in ethanol is not enough until the amount of piperine is not significant to form crystals. Maybe the alcoholic potassium hydroxide added to the extracted piperine is just too much, until it is too dilute and the crystal cannot be formed.
I am going to have lots of crap in the discussion part of the reports. But there is another good news. The reports are to be submitted by 29th Sept. So I can take my time for them =)
The open-book test for inorganic chemistry is postponed to next Monday. So plus the organic chemistry test, I will have two tests on the day. And I haven't started to touch any of them! I am really very lazy to read anything. Is it because that I have very less self-motivation?
It is not that I cannot do it, but just the matter of whether I want to do it or not. People do have the desire or passion to learn or seek for improvement. But what has killed mine? Another good question to think about...
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