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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the color change of Methyl Red in acidic conditions?
💡 Hint: Think about how the color looks in relation to pH.
Question 2
Easy
What does an indicator represent in a chemical reaction?
💡 Hint: Consider what happens when you add acid or base.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What happens to an indicator when the pH decreases?
- It changes to its base form
- It changes to its acid form
- It remains unchanged
💡 Hint: Think about how H plus ions influence the equilibrium.
Question 2
True or False: An indicator can only transition between two colors.
- True
- False
💡 Hint: Focus on the nature of acid-base indicators.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
You have a weak acid indicator with a pKa of 4.5. What is the expected color change range for this indicator?
💡 Hint: Remember to use pKa ± 1.
Question 2
A universal indicator shows a shift from red at pH 1 to purple at pH 14. What does this tell you about its usefulness?
💡 Hint: Consider what range has been covered by this indicator.
Challenge and get performance evaluation