50. Solving a chemistry problem

94. Calculate the current flowing through a 0.2 M solution of potassium chloride containing copper (II) sulfate with a concentration of 0.05 mg / ml at a potential of - 0.5 V relative to the calomel reference electrode, if the capillary characteristic is m2 / 3 t1 /6 is equal to 1.85, and the diffusion coefficient D = 1.95 • 10–5 cm2•s–1.