Electrical conductivity with salt water

This experiment is a demonstration, it serves to understand how the salt dissolved in water facilitates an optimum condition for the passage of the current between the two electrodes.
The working voltage for this experiment must be 230 volts DC or AC.
A light bulb 500W 230V or 230V 100W 5 bulbs in parallel between them ..
Two iron nails or other conductive metal.
glass tray.
Water and salt.
Two electric wires.


Similar Posts


  1. passing electricity through salt water produces chlorine gas – the bi product is sodium…very corrosive. So wjats the point of this and it does look like the power source is the so called ampmeter.

  2. damm…before mixing salt in thaT bowL..Bulb should b glow bcz water is also good conductor oF electrcitY…then Y bulb is not glow..tell m sir plz…..plz plz

  3. I have Landscaping business and I I dropped 60 yards sold for winter time for the snow next winter I drop all that salt on the water and I selling energy to New York City

  4. Guys the chemistry behind that is quite simple.

    NaCl is dissolved in H2O…red wire is the anode and black
    is the cathode which leads us to following half reactions:

    Anode: 2 Cl- _to_ Cl2 + 2e-
    Cathode: 2 H2O + 2e- _to_ H2 + 2OH-

    Overall reaction: 2Na+ + 2Cl- + 2H2O _to_ Cl2 + H2 + 2Na+ + 2OH- (dissolved Sodium hydroxide_NaOH)

    So the evolving gases are H2 and Cl2, BUT: since the
    products of the reaction are not separated by a membrane, the Cl2 gas reacts
    with 2OH- to form OCl- (Hypochlorite) + Cl- + H2O
    Thus it is somehow dissolved Sodium Hypochlorite (NaClO)

    Thank me later…
    Aww.. I have forgotten to mention that O2 is NOT evolved
    since the oxidation potential of Cl- comes first, so Cl2 is formed. To form O2,
    all Cl- have to be removed by gaseous Cl2. But things get complicated as Cl2 is
    not only removed but also reacts to Chlorites which are soluble in water. So
    ClO- is involved, possibly also chlorates and perchlorates which makes it hard
    to remove chlorine from the water.

  5. Measurement by weight, linear and volume are learned in the 4th grade. There are still people who believe energy comes from sugar not salt. Thanks for this wonderful experiment! Check out The Health dot c o m with Andrew Chung, MD/PhD for more information about the right amount to eat daily.

  6. The bubbles coming off the electrodes in the water are O2 and H, you can capture this in a test tube then make it burn with a match and get a nice pop. Don't use a huge bottle though as it is very explosive. To capture the gas, but a test tube of water over each electrode, as the tube fills with gas it will empty the water. The tube that fills first is the hydrogen and the slower one is the oxygen.

Leave a Reply

Your email address will not be published. Required fields are marked *