Question 3
A solution turns phenolphthalein pink and red litmus blue. What is it?
The right answer is the one marked above.
A base. Both colour changes are the ones an indicator shows in a base.
Lesson: Chapter 7 — Acids, bases and salts
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A solution turns phenolphthalein pink and red litmus blue. What is it?
The right answer is the one marked above.
A base. Both colour changes are the ones an indicator shows in a base.
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