Posted by **Alice** on Wednesday, January 14, 2009 at 7:51am.

The cell Pt|H2(1 bar)|HCl(m)|AgCl(s)|Ag

has an Stadard elctrode potential value of 0.2224V at 298K

Using the Nernst equation, calculate a value for the EMF when the HCl concentration is 0.20M.

I know what the Nernst equation is but I am unsure how to use it when I only have the concentration of one of the ions.

- Chemistry -
**DrBob222**, Wednesday, January 14, 2009 at 11:25am
All of the other concns are 1. (1 bar, solid AgCl, solid Ag, etc). When HCl is 1 M, that gives Eo. So stick in 0.2 M for HCl and 1 for the others.

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