A student adds drops of lemon juice to a red cabbage pigment. What color is the solution most likely to be? Here is the pigment table for red cabbage:
PH 1-2: Pink, Acid
PH 3-4: Dark Red, Acid
PH 5-6: Violet, Acid
PH 7-8: Blue, Neutral-Base
PH 9-10: Blue-Green, Base
PH 11-12: Green-Yellow, Base

Question

Quizplus · Accepted Answer

Lemon juice would most likely change the color of the pigment to pink.
Key Takeaway: A major component of lemon juice is citrate, a strong acid. After the addition of this acid to the pigment, it is most likely to reach a pH of about 2, which would result in the pigment turning pink.

A Student Adds Drops of Lemon Juice to a Red