معادله نرنست: تفاوت میان نسخه‌ها

{{در دست ویرایش ۲|ماه=ژوئن|روز=۸|سال=۲۰۰۸|چند = 2}}

:<math>

E_{red} = E^0_{red} - \frac{RT}{zF} \ln\frac{a_{\mbox{Red}}}{a_{\mbox{Ox}}}

E_{cell} = E^0_{cell} - \frac{RT}{zF} \ln Q

</math> &nbsp;&nbsp; (total cell potential)

*<math>E_{red}</math> is the half-cell [[reduction potential]]

*<math>E^0_{red}</math> is the [[standard electrode potential|''standard'' half-cell reduction potential]]

At very low concentrations of the potential determining ions, the potential predicted by Nernst equation tends to ±infinity. This is physically meaningless because, under such conditions, the exchange current density becomes very low, and then other effects tend to take control of the electrochemical behavior of the system.

 

 

* [http://www.nernstgoldman.physiology.arizona.edu/ Nernst/Goldman Equation Simulator]

* [http://thevirtualheart.org/GHKindex.html Interactive Nernst/Goldman Java Applet]

 

 

[[ca:Equació de Nernst]]