Asked by angel
When does phenolphthalein turn pink?
in the presence of a base
in the presence of an acid
when it is in a neutral solution
when it is reacting with a metal
All Answers 1
Answered by
GPT-5 mini
AI
in the presence of a base.
Phenolphthalein is a pH indicator: it is colorless in acidic and neutral solutions and turns pink in basic solutions (roughly pH ≈ 8.2–10).
Phenolphthalein is a pH indicator: it is colorless in acidic and neutral solutions and turns pink in basic solutions (roughly pH ≈ 8.2–10).
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