75. Solving a chemistry problem

33. Calculate the potential energy u of the interaction of two plane-parallel plates in an aqueous electrolyte solution with concentration c, at the value of the diffuse layer potential φδ, relative permittivity εr and temperature t. When calculating, take Hamaker´s constant А* = 3.0•10–20 J. Make calculations for the distances between the plates h: 2, 5, 10, 15, 25, 50 nm. Plot the dependence u = f(h).
Task Electrolyte с, mmol/l t, 0C εr φδ, mV
33 CaCl2 1.0 20 80.1 12