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Pepertual Motion - Hydrolysis at 1.24 volts

  • 05-02-2005 2:51pm
    #1
    Moderators, Recreation & Hobbies Moderators, Science, Health & Environment Moderators, Technology & Internet Moderators Posts: 93,552 Mod ✭✭✭✭


    Found this

    http://www.keelynet.com/energy/hydrogas.htm
    Producing Hydrogen at 1.24 Volts!

    Here's a little experiment that even a child can safely perform
    that proves that there is no 'minimum voltage' for splitting water
    into hydrogen and oxygen.

    The supposed minimum hydrolysis voltage is 1.24 volts. According to
    standard theory, no reaction should take place at room temperature
    below this voltage.

    This theoretical figure was determined by taking the energy released
    per mole when hydrogen is burned. Using that figure, and knowing
    how many amp hours are needed to produce 1 mole of gas, they
    calculated the theoretical minimum voltage.

    In other words, this figure was not determined by first-hand experimentation.

    Ok, here's how to do it:
    1. fill a small jar with tap water and in it dissolve table salt
    until reaching full saturation.
    2. Get two pieces of steel to use as electrodes. Two short pieces
    of 1 inch wide flat stock were used in the original experiment.
    They were spaced about 1/8 inch apart.

    3. Hook up a 1.5 volt dry-cell battery to the two plates using a
    couple of test leads and then measure the voltage across the
    cell plates. You should see some gas coming off the electrodes
    and it'll be fizzing. (my measurement showed 1.51 volts under
    load)

    4. Next, connect a small silicon rectifier diode in series with
    the battery and cell. The particular diode I had available
    dropped the circuit voltage by about .5 volts. The current will
    be quite a bit lower than it was, and the gas production will
    be quite a bit slower. But, you should be able to see and hear
    the bubbles coming off the plates. (my cell voltage was 1.05
    volts during this part of the test.)

    Congratulations! Your cell voltage should be lower than 1.24 volts,

    yet you are still producing hydrogen and oxygen gas!

    At these lower voltages, you will be producing gas at greater
    than 100% efficiency according to standard hydrolysis theory!

    The reaction in this voltage range is also endothermic. Go figure.
    LOL - someone obviously forgot that the voltage drop across a diode is current dependent - roughly 10mV lower when you halve the current - drop the current enough and there is almost zero voltage drop, that's why you can use diodes in digital multimeters.

    Still I can't gloat until I've repeated the experiment and proven that it isn't in fact 1.05V and worked out the bond energies.

    Many mother boards produce up to 100A at these low voltages - interesting


Comments

  • Registered Users, Registered Users 2 Posts: 176 ✭✭Blackpanther95


    I would of thought 1.24 was the average value. But besides that experiment is flawed for some many reasons.


  • Registered Users, Registered Users 2 Posts: 1,974 ✭✭✭whizbang


    But isn't the theory related to pure water ?

    salt added to the water decreases its resistance, hence more current flow per voltage applied.


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