2.3.2 - pH Scale
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Practice Questions
Test your understanding with targeted questions
What does a pH of 7 indicate?
💡 Hint: Think of pure water.
What does it mean if a solution has a pH less than 7?
💡 Hint: Remember that lemon juice is acidic.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does a pH of 14 indicate?
💡 Hint: Think about the end of the scale.
True or False: Lemon juice has a pH greater than 7.
💡 Hint: Remember the pH of lemon juice.
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Challenge Problems
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A solution has a pH of 3. If you add a strong base, what do you expect to see in terms of pH change, and what color would a universal indicator show?
💡 Hint: Think about how bases react with acids.
Calculate the pH change if the hydrogen ion concentration increases tenfold in a solution initially at pH 7.
💡 Hint: How does pH relate to hydrogen ion concentration?
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