5.1 - What Are Indicators?
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Practice Questions
Test your understanding with targeted questions
What color does litmus paper turn in acid?
💡 Hint: Think about the color change indicated in acid.
What is the color of phenolphthalein in a basic solution?
💡 Hint: Consider how it reacts in a basic environment.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What color does litmus paper turn in acidic solutions?
💡 Hint: Recall the common property of indicators with acidity.
True or False: Phenolphthalein is colorless in acidic solutions.
💡 Hint: Remember how phenolphthalein behaves in different pH levels.
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Challenge Problems
Push your limits with advanced challenges
You have three solutions: one acidic, one basic, and one neutral. You only have litmus paper and phenolphthalein as indicators. Describe how you would test each solution and what results you would expect.
💡 Hint: Think about the color changes each indicator indicates.
In a titration experiment, the endpoint is very difficult to observe. If you were to switch from phenolphthalein to a different indicator, which one would you select to give clearer results and why?
💡 Hint: Consider indicators that change at lower pH levels.
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