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Standard Reduction Potential as Intensive Property

Posted: Tue Feb 02, 2016 8:05 pm
by jgreynoso 2J
In the start of electrochemistry, it was addressed that the standard reduction potential is an intensive property. I think I understand it a little, but can someone clarify what "voltage does not depend on how many times the reaction occurs" means? Also, how come density was stated to also be an intensive property in class where on page 16 of the course reader, it says density is a state function. Aren't state functions extensive?

Thank you.

Re: Standard Reduction Potential as Intensive Property

Posted: Tue Feb 02, 2016 8:33 pm
by Michelle Dela Rosa 1D
Standard reduction potential is an intensive property. You might multiply a half reaction by 2 to balance the electrons, but the standard reduction potential is constant and does not need to be multiplied by 2 (unlike bond enthalpies).

Re: Standard Reduction Potential as Intensive Property

Posted: Tue Feb 02, 2016 8:44 pm
by Michelle Dela Rosa 1D
Also, with regard to density, it is an intensive property since it is independent of the amount/size of the material/sample. Density is mass (extensive property) divided by volume (extensive property). An extensive property divided by an extensive property is an intensive property.
State properties refer to change being independent of the path taken to obtain that state.
Hope this helps!