Still, it interferes with determining the OCP-time transients and, subsequently, the OCP-charge relationships. The latter becomes a function of time, preventing the analysis of the O2 dissociation on Pd(pc). ( ) Lastly, while OCP-time transients can be recorded on Au(pc), no measurable charge is detected in the immediate reduction scan, suggesting that the O-upd formation through the dissociation of molecular oxygen is very slow on Au(pc), preventing its direct analysis. Regarding the dissociation of molecular oxygen, this leaves only the Rh(pc) to be studied in the same fashion as the Pt(pc) surface, the result of which is displayed in Fig.