7.3.1 - The Ion Product of Water (K_w)
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions
What is the value of K_w at 25 °C?
💡 Hint: Think about the ionization of water.
What does a pH of 7 indicate about a solution?
💡 Hint: Recap your definitions of acidic and basic.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is the K_w of water at 25 °C?
💡 Hint: Think about the standard values.
True or False: In an acidic solution, [OH⁻] is greater than [H⁺].
💡 Hint: Recall what defines acidity.
1 more question available
Challenge Problems
Push your limits with advanced challenges
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.
If a solution has a pH of 3, calculate the concentration of OH⁻.
💡 Hint: First, find [H⁺] and then use K_w.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.