Seeking help with issues regarding open-type residual chlorine electrodes
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These are two electrodes: a gold electrode and a copper electrode. Copper loses electrons, while hypochlorite gains electrons. What I don’t understand is this: when monitoring water, there should be other substances in the water that can also gain electrons just like hypochlorite. So how can it be said that this method is used to measure residual chlorine in water?
Of course, if there are oxidizing substances in the water, it will affect the measurement results, but under normal circumstances, no such oxidizing substances are present in water.