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CrocodileChemist @crocodilechemi1.bsky.social · 24/12/2024

The second #GardenIndicators Christmas edition shows the pH profile of poinsettia bracts. Just look at the cheeky pink and purple in the RGB plot!

A collage of photographs showing the pH colours of poinsettia bracts. These range from pinks in acid, to browny tones in alkali and yellow at pH 13. There is an image of a plot showing the colours seen during the continuous neutralisation reaction by adding alkali to the acidified extract. It shows flashes of pinks and purples too.

CrocodileChemist@crocodilechemi1.bsky.social

#GardenIndicators Christmas edition! I bought the cranberries purely for the science and now I’ve got to make cranberry sauce from scratch! Here’s their pH profile and the RGB plot of the acidified extract neutralised with 0.1M NaOH, then adding 2M NaOH