Hello everyone,

I'm actually trying to define the potential of my Pt pseudo electrode but I'm not sure of my protocol

First I suppose that we need to know what kind of reaction is occurring near the reference electrode.

Second I have to find the value of couple vs SHE

Third, apply PH to get the value Vs RHE;

The medium is NaNO3 dissolved into water with C= 100mM, CE, and WE are both gold-based.

My first guess is :

Pt Pt2+ + 2 e- (E°= +1.188 vs SHE)

E = 1,188 - 0,059 PH = 0,775 vs RHE

But I feel skeptical about this.

Can somebody enlighten me?

Thanks.

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