62. Solving a chemistry problem

62. Solving a chemistry problem

2. Which electrode (mercury dripping or platinum) should be used as a working electrode when determining Fe3 (E1/2 = 0.63 V), IO3- (E1/2 = -0.05 V) and Cd2 (E1/2 = -0.70 V) ions )? What processes determine the limits of the use of these electrodes in polarography?

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