№ files_lp_4_process_1_50569
Detailed guide for a classroom demonstration showing the migration of positive and negative ions using a copper chromate mixture and an ammonium-based electrolyte solution.
Year: 2021
Publication: Education in Chemistry
Type: Technician notes / Demonstration guide
Topic: Chemistry education / Electrochemistry
Author: Royal Society of Chemistry
Target audience: Teachers and students
Demonstration materials: Ammonium chloride, ammonium hydroxide, potassium dichromate(VI), copper(II) sulfate(VI), concentrated ammonia, filter paper, petri dishes, wires, paper clips, DC power supply
Safety instructions: Wear goggles and gloves, use well-ventilated area, proper chemical disposal methods
Preparation details: Instructions for electrolyte solution and copper chromate mixture
Demonstration procedure: Setup of petri dishes, paper clips, filter paper, application of DC current, observation of ion movement
Teaching guidance: Explanation for younger and older students, visualisation of ion migration, relation to chemical equilibria and complex ions
Price: 8 / 10 USD
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