45. Solution to Chemistry Problem

42. Calculate the potential energy and interactions of two plane-parallel plates in an aqueous electrolyte solution with a concentration of c, at a diffuse layer potential of φδ, relative permittivity εr and temperature t. In the calculation, take the Hamaker constant A* = 3.0*10-20 J. Make calculations for distances between the plates h: 2, 5, 10, 15, 25, 50 nm. Plot a graph of the dependence u=f(h).
Problem Electrolyte c, mmol/l t, 0C εr φδ, mV
42 KBr 1.5 23 79.1 18