What color change is exhibited by phenolphthalein during a titration of aqueous acetic acid with aqueous sodium hydroxide?
A) colorless to pink
B) pink to colorless
C) green to yellow
D) yellow to blue
E) blue to yellow

Question

Quizplus · Accepted Answer

Phenolphthalein is a pH indicator that is colorless in acidic solutions and turns pink in basic solutions. During the titration of acetic acid (a weak acid) with sodium hydroxide (a strong base), the solution changes from acidic to basic, causing phenolphthalein to change from colorless to pink.

What Color Change Is Exhibited by Phenolphthalein During a Titration