Let's take the single electron transfer reaction. calculate the relative errors for the following according to the condition a$=0\mathrm{.}5$ for a$=0\mathrm{.}3$ and a$=0\mathrm{.}7.$

a$)5$ mV $15$mV and $50$mV for overvoltages find a linear cuurent and linear overvoltages characteristics

b$)$for $5$mV $15$mV and $50$mV overvoltages calculate the Tafel relations$($considering the difference between a completely irreversible chemical reaction and a reversible chemical reaction$).$