File:Electrolysis.svg

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English: Simple setup for demonstration of electrolysis of water at home.

You will need:

  • A glass of water
  • Two pencils sharpened at both ends
  • Either 9 volt battery or 9-12 V DC adapter.
  • Some bits of wire
  • Tape to fix things together
  • A teaspoon-full of table salt

After you connect everything, bubbles will form at the tips of pencils immediately.

Oxygen gas bubbles (O2) will form at + electrode named anode.

Hydrogen gas bubbles H2 will form at - electrode named cathode. The amount will be twice the amount of O2.

Pure water is an insulator and the electrolysis may proceed too slowly. Some will say Sulfuric acid or NaSo4 is better, but those are not readily available outside labs. Sulfuric acid is also dangerous to handle. Table salt will suffice for the purpose of this demonstration. Using NaCl as an electrolyte results in some impurity in the form of chlorine gas at anode but that should not be important for the purpose of this demo.

Some things to vary:

  • Try stripping the pencil lead (graphite) from the wood to increase the area of contact with water.
  • Try the to see what happens if you vary water temperature.
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Author Nevit Dilmen (talk)
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Date/TimeThumbnailDimensionsUserComment
current10:00, 7 March 2015Thumbnail for version as of 10:00, 7 March 2015976 × 937 (42 KB)Goran tek-en (talk | contribs)0(zero) to O (capital O)
09:48, 20 August 2011Thumbnail for version as of 09:48, 20 August 2011976 × 937 (50 KB)Nevit (talk | contribs)border
09:27, 20 August 2011Thumbnail for version as of 09:27, 20 August 2011872 × 819 (46 KB)Nevit (talk | contribs)txt 2 path
09:25, 20 August 2011Thumbnail for version as of 09:25, 20 August 2011872 × 819 (32 KB)Nevit (talk | contribs)fixes
19:48, 20 July 2010Thumbnail for version as of 19:48, 20 July 2010872 × 819 (32 KB)Nevit (talk | contribs){{Information |Description=Basic setup for demonstration of electrolysis of water at home. |Source={{own}} |Date=2010 07 |Author=Nevit |Permission= |other_versions= }} Category:Electrolysis Category:Nevit Dilmen SVG

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