6. A metal ion is reduced in an aqueous solution by polarography. The current (at the diffusion plateau site) at -0.600 V is 10 µA. The currents measured point by point at different potentials are:
E,B -0.464 -0.485 -0.509 -0.531 -0.555 -0.576
I, μA 1.0 2.0 4.0 6.0 8.0 9.0
Calculate Ei/2 and n is the number of electrons involved in the reduction

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