From 20th to 29th of July
47th International Chemistry Olympiad (IChO) was held in Baku,
Azerbaijan. All together 290 form 75 countries solved 3 practical and 8
theoretical tasks. This Olympiad was definitely one of the hardest in IChO
history, most probably being hard to solve for a masters student not only for
high school students.
The tasks given to students were very versatile
introducing students both to history of Azerbaijan chemistry industry but also
to up-to-date methods. One of the practical tasks given to student’s concerned
estimating drug content in medicine based on initial rates. The drug Diclofenac
was oxidized with KMnO4 and the spectral change was followed at 525
nm (Figure below) in the thermostated conditions.
The content was calculated based on a four
point calibration graph (initial rate vs concentration). For solving this task
students were given (see a photo below) miniaturized photometer, thermostat, cuvette and a magnetic stirrer. The photometer and
thermostat were directly controllable with a laptop. Student carried out data
treatment in Excel.
I find this problem being a true success as
this really introduces young students with interest in chemistry to the
analytical methods used today in labs.
For more tasks see http://icho2015.msu.az/
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