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Sound technical content, curated with aloha by
Ted Mooney, P.E. RET
Pine Beach, NJ

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How does Faraday's Law work in Hydrogen Electrolysis?

From letter 5916, I saw how Faraday's law works in coating. Can you explain how it is used in Electrolysis of Hydrogen and how many grams would be produced from one Faraday? Thanks. P.S. I'm only in the 9th grade so please try to explain semi-simply. Again, thanks.

Christopher G.
- Loveland, Colorado, U.S.A.
2003

2003

Starting simply, reactions are often proportional to actions. If burning a gallon of gas will propel a moped 100 miles, burning 2 gallons will take it 200 miles. Faraday's Law expresses this idea for electrochemical actions and reactions. If one amount of electrical current will deposit one unit of metal or release one unit of hydrogen, then twice that amount of current will deposit two units of metal or release two units of hydrogen.

Stepping up the complexity a bit, Faraday's Law puts numbers on those "amounts" and says that it takes 96, 485 coulombs or ampere-seconds of electricity to release one gram of hydrogen. For convenience of the calculations, we call that 96,485 coulombs one "Faraday".

Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey

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