Red Cabbage PH Indicatator
PH Test With Red Cabbage Pigments
By: Quentin GThis is a recent experiment that I had to do for school and I found it to be an amazing way of showing PH. PH is the measure of acidity and base of a certain object starting from 0 to 7 to 14, zero being acidic, seven being neutral, and 14 being base. The way to start the project is by peeling five big leaves of the red cabbage and putting them in the blender. Then put water in the blender so that when you turn the blender on the pigment that the red cabbage contains is absorbed in the water. You then take the bigger pieces of cabbage out and filter the smaller pieces out with a coffee filter and funnel. Then take your red cabbage solution and pour it into separate glasses, ensuring enough room in the glass for the second part of the experiment later. The experiment I followed called for items like bleach and soda which I couldn't find. I used vinegar, 91% isopropyl alcohol, sugar, lemon juice, baking powder, water, and orange juice instead. Vinegar, lemon juice, and orange juice were all acidic, and the baking soda, water, sugar water, and 91% isopropyl were the base for the experiment.
Helpful Facts - For the red cabbage experiment, an acid will appear red or slightly pink if it's neutral, green, and the base is blue. You can use stuff like vinegar, bleach, lemon juice, sugar water, baking powder water, and anything else acidic or base.
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Chemistry