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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the value of K_w at 25 °C?
💡 Hint: Think about the ionization of water.
Question 2
Easy
What does a pH of 7 indicate about a solution?
💡 Hint: Recap your definitions of acidic and basic.
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 is the K_w of water at 25 °C?
- 1.0 x 10⁻¹⁴
- 1.0 x 10⁻⁷
- 1.0 x 10⁻¹⁰
💡 Hint: Think about the standard values.
Question 2
True or False: In an acidic solution, [OH⁻] is greater than [H⁺].
- True
- False
💡 Hint: Recall what defines acidity.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
At 40 °C, the K_w of water is found to be 2.5 x 10⁻¹⁴. What are the concentrations of H⁺ and OH⁻ in neutral water at this temperature?
💡 Hint: Use the square root of K_w for equal concentrations.
Question 2
If a solution has a pH of 3, calculate the concentration of OH⁻.
💡 Hint: First, find [H⁺] and then use K_w.
Challenge and get performance evaluation