Practice - Tests for Cations (Positive Ions)
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 gas is evolved when ammonium ions are tested with NaOH?
💡 Hint: It's the same gas with a strong smell, often used in cleaners.
What color precipitate is formed when copper ions react with NaOH?
💡 Hint: Think of the color of the ocean!
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is released upon heating ammonium ions with NaOH?
💡 Hint: It's a gas with a strong smell.
True or False: A green precipitate indicates the presence of Cu²⁺.
💡 Hint: Remember the color of cations' precipitates!
1 more question available
Challenge Problems
Push your limits with advanced challenges
You have a solution that may contain Cu²⁺, Fe²⁺, and Zn²⁺. Outline a step-by-step procedure to identify which cation(s) are present.
💡 Hint: Identify by precipitation colors methodically.
Design an experiment to test a solution suspected of containing Fe³⁺ ions, detailing the expected observations.
💡 Hint: Focus on what happens in response to the reagents.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.