Purpose of Hydrogen Electrode

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jonathanshi_1A
Posts: 22
Joined: Fri Jul 22, 2016 3:00 am

Purpose of Hydrogen Electrode

Postby jonathanshi_1A » Sun Feb 05, 2017 10:35 pm

I understand that the galvanic cell changes chemical energy to electrical energy with an anode and cathode; however, I am confused with the purpose of the hydrogen electrode. Don't we normally measure the e- transfer of the system with normal anode/cathodes?

Ricardo Munoz 3K
Posts: 16
Joined: Fri Jul 22, 2016 3:00 am

Re: Purpose of Hydrogen Electrode

Postby Ricardo Munoz 3K » Sun Feb 05, 2017 10:58 pm

Basically, the Hydrogen electrode is used to serve as a generic starting point for all reduction potentials. The values of E given for each equation on the Standard Reduction Potentials chart is the voltage that would be given if each of those reactions were done with the hydrogen electrode being the anode (I hope).
Hope this answers your question!


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