Which of the following color changes can be observed when excess sodium hydroxide is added to acetic acid and phenolphthalein is used as an indicator?
A) from colorless to pink
B) from red to yellow
C) from pink to colorless
D) from yellow to red

Question

Quizplus · Accepted Answer

When sodium hydroxide, a base, is added to acetic acid, it neutralizes the acid, forming water and a sodium acetate solution. Phenolphthalein changes color in a basic solution, turning from colorless in acidic conditions to pink in basic conditions. Thus, the solution turns from colorless to pink.

Which of the Following Color Changes Can Be Observed When