In this experiment, Tere measured the absorbance of Dilute Blue Food Coloring as it is being reacted with ozone (approx 800 nanomoles/min).
More Food Coloring Experiments. We have monitored the reaction of ozone with various food colorings as a function of time. We have concluded that ozone reacts most quickly with blue. Here is a photo overview of the reactions with all four McCormick food colors: (Bruce's experiment)
In this initial experiment, ozone was bubbled
through
all four food colors (as dilute solutions) for about 5 minutes
each.
When compared to the original solution, at left in each case, one can
see
that the solution turned colorless for each food coloring.
and, repeated more carefully...
