Chapter 19, Problem 70E

Calculate the quantity indicated for each of the following electrolyses

a. $\left[{\text{Cu}}^{\text{2+}}\right]$remaining in 425 mL of a solution that was originally 0.366 M ${\text{CuSO}}_4$ , after passage of 2.68s and s 282 s and the deposition of Cu at the cathode

b. the time required to reduce $\left[{\text{Ag}}^{\text{+}}\right]$ in 255 mL of ${\text{AgNO}}_{\text{2}}\left(\text{aq}\right)$ from 0.196 to 0.175 M by electrolyzing the solution between Pt electrodes with a current current of 1.84A