https://melscience.com/en/experiments/daniell-galvanic-cell/
1. Take 2 zinc rods from the vial marked “Zn.”
2. Take 2 crocodile clips: 1 black and 1 white. Using crocodile clips, fix the zinc rods onto the walls of plastic test tubes.
3. Take 2 copper plates from the vial marked “Cu.”
4. Take the red crocodile clip. With the red clip, fix one copper plate onto the wall of the third plastic test tube. With a free end of the white crocodile clip wire, fix the other copper plate onto the wall of the fourth plastic test tube. Thus, the white wire will connect 2 test tubes: with zinc and with copper.
5. Place the test tubes connected with the white wire into a plastic cup.
6. Insert the test tube with the black clip into the plastic cup.
7. Insert the test tube with the red clip into the plastic cup.
8. Distribute 0.1M zinc sulfate ZnSO4 solution (10 mL) evenly between the two test tubes with zinc rods.
9. Distribute 1M copper sulfate CuSO4 solution (10 mL) evenly between the two test tubes with copper plates.
10. Take two stripes of a well-absorbing towel and bend them in halves. Dip one end of one of the towels into a test tube with a zinc rod, and other end—into a test tube with copper wire. Repeat for the second towel and the other two test tubes.
11. Take a light emitting diode. Connect a free end of the red crocodile clip wire to a long leg of the diode. Connect a free end of the black crocodile clip wire to a short leg of the diode. Wait for 2 minutes.
12. The napkins will soak in the solutions, and the diode will light up!
Amazing chemistry experiments to do with your family: https://melscience.com/en/
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Post time: Sep-01-2017