“The Сopper, or There and Back Again“ from the “Copper“ set

Perform this amazing experiment at home with MEL Science: https://melscience.com/en/experiments/copper-compounds-color-palette/ Safety * Put on protective gloves and eyewear. * Conduct the experiment on the plastic tray. * Observe safety precautions when working with boiling water. Disposal * Dispose of solid waste together with household garbage. * Pour solutions down the sink. * Wash with an excess of water. Step-by-step instructions 1. Take an empty vial and pour in two big spoons of 1M copper sulfate CuSO₄ solution. 2. Add two small spoons of sodium chloride NaCl. 3. Pour in 2M sodium carbonate Na₂CO₃ solution from the bottle. 4. Close the vial and shake it vigorously for 1 min. 5. Secure the vial in the test tube holder. 6. Place the vial in the beaker and pour in there freshly boiled water to completely cover the vial. Wait 15 min. 7. Make a funnel out of a piece of filter paper, as shown. Fold the filter paper twice, insert your finger into the “pocket,” and open one layer of paper to the side to make a cone. 8. Insert a plastic funnel into the flask and fit in the paper filter. 9. Pour all the contents from the vial into the funnel. 10. Wait for the liquid to drain through. 11. Pour in some warm water into the funnel and let it filter through. Repeat this step two more times. 12. Take a spoon and scoop the solids out of the funnel without ripping the filter. Collect these solids into a vial. 13. Pour 3 big spoons of 2M ammonium carbonate (NH₄)₂CO₃ solution into the vial. 14. Close the vial with a cap and shake it vigorously. 15. Now, slowly add all the 3M sodium bisulfate solution NaHSO₄ from the bottle. 16. You obtained initial copper sulfate solution!