It is again this time of the year, the semester has been very long. One more week of practicals and we are all ready for the Christmas break!!!

This year to honour the tradition we have our ChemisTree in the teaching labs. In this post I’m unveiling the secrets behind the colours of our 2016 ChemisTree.

Blue: A pinch of Copper (II) sulfate pentahydrate in water

Red: a few drops of Ferroin indicator in water

Green:  A pinch of Nickel(II) nitrate hexahydrate in water

Deep purple: A pinch of potassium Permanganate in water

Violet: Literally 1 mg of Crystal Violet per Liter of water. Crystal Violet is a very strong dye.

Pink: A few drops of Phenolphthalein in a slightly basidified solution of NaOH in water. The colour fades away after a few minutes, long enough for a nice picture.

Many thanks to Indigo and Fosca for their help and creativity.

 

Advertisements