Practice Indicators: Visual Sentinels of pH Change - 5.3 | Chapter 5: Acids, Bases, and Salts | IB Grade 9 Chemistry
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What color does blue litmus paper turn in an acidic solution?

πŸ’‘ Hint: Think about how litmus paper indicates acids.

Question 2

Easy

What is a common use for indicators in chemistry?

πŸ’‘ Hint: Indicators help visualize acidity and basicity.

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 color does red litmus paper turn when placed in a basic solution?

  • Red
  • Blue
  • Green

πŸ’‘ Hint: Consider the opposite of blue litmus paper.

Question 2

True or False: Universal indicators only show red for acids.

  • True
  • False

πŸ’‘ Hint: Think about the colors presented in various pH levels.

Solve 2 more questions and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

You are given three solutions: a strong acid, a weak acid, and a neutral solution. How would you design an experiment to differentiate them using indicators?

πŸ’‘ Hint: Which indicators are best for these conditions?

Question 2

In a titration involving hydrochloric acid and sodium hydroxide, which indicator would you choose and why?

πŸ’‘ Hint: Match the transition range of the indicator with the expected pH at endpoint.

Challenge and get performance evaluation