15. Add about 25 mL of 6 M HCL to the same beaker that was just emptied. Place on hotplate and turn to medium heat.Part D:16. Remove the HCl from the hotplate and transfer to ceramic mat. 17. Flip the solid product and filter paper from the Buchner funnel into the beaker of warm HCl (use spatula to scrape product form funnel into beaker)18. Discard the filtrate and clean the funnel.
19. After copper (II) oxide has dissolved, lift filter paper out. Hold the paper above solution and rinse with DI water until free of color. Record observations about resulting solution.20. Discard filter paper in trash.Part E: 21. Tear a full length strip of aluminum foil into 10 pieces. 22. Add the first piece of oil to beaker and swirl. Record observations.23. Continue adding foil pieces until the green color of solution is no longer visible. 24. Obtain a new filter paper and record its mass. Connect the vacuum filtration apparatus and filter solution.25. Let air be pulled through the sample for 10 minutes.26. Record mass of dry weigh boat.27. Transfer the filter paper into the weight boat, and mass the weigh boat, filter paper, and solid product altogether. Record observations of recovered copper metal. 28. Discard each component properly.