I would like to know how pure is the hydrogen obtained in this reaction considering that it is going to be done outdoor and with a small glass bottle. I'm wondering if the atmospheric gases affect this?
As long as you use distilled water, pure sodium hydroxide pellets, and clean flask, the produced H2 gas should be close to 100% purity.
Here is the reaction:
2Al + 2NaOH + 6H2O → 2NaAl(OH)4 + 3H2
The materials needed for this reaction include: the aluminum foil, NaOH pellets, Erlenmeyer flask, and a distilled water dropper.
–I suggest that you employ the following procedure:
a) Place a small amount of aluminum foil in the flask, b) Put a few pellets of NaOH on the aluminum foil, and then c) Add water droplets onto the NaOH pellets.
Safety is critical in this experiment as H2 is flammable and explosible.
Hope this helps answer your question.
Professor Yehia Khalil, Yale University, USA
Fellow of the University of Oxford, UK
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