Phenolphthalein is not naturally present in cabbage juice; however, cabbage juice can serve as a pH indicator due to the presence of anthocyanins, which change color based on acidity or alkalinity. When cabbage juice is mixed with a basic solution, it will typically turn a greenish-yellow color, while in acidic solutions, it may appear reddish-purple. If phenolphthalein is added to cabbage juice, it could alter the color response based on the pH level of the solution.
Litmus paper, phenolphthalein, and red cabbage juice are substances that change color in response to changes in acidity or basicity. Litmus paper turns red in acid and blue in base, phenolphthalein is colorless in acid and pink in base, and red cabbage juice turns red in acid and blue in base.
...indicator. (Or, the juice of a cabbage. :) )
From a cabbage!(:
from a cabbage
red
There is no such thing as purple cabbage juice because red cabbage juice is actually already purple, its just called red cabbage jucie.
When adding tomato juice to cabbage juice, the cabbage juice turns redish
no it reacts only with rainbow cabbage juice and not red
For the composition of cabbage see the link below.
Which is more accurate- the pH paper or the red cabbage juice and why?
no
Cabbage juice is a natural pH indicator that changes color when mixed with acids or bases. When a base is added to cabbage juice, it typically turns a greenish-yellow color. This color change occurs because the pigments in the cabbage juice, known as anthocyanins, react to the pH change.