78. Solving a chemistry problem

6. Calculate the z-potential and plot a graph of z versus the pore diameter of a corundum diaphragm in a KCl solution using the following experimental electroosmosis data:
d⋅10 6 , m 3.0 10.0 25.0 75.0
V⋅10 8 , m 3 /s 2.0 3.2 3.9 4.0
Ks*102, Ohm-1*m-1 1.6 0.48 0.08 0.03
Kv=1.5*10-2 Ohm-1*m-1 I = 2*10 –2 A; η =1*10 –3 Pa⋅s. ε = 81;