20. Calculate the repulsive energy Ue of spherical part

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20. Calculate the repulsive energy Ue of spherical particles with a diameter of 20 nm in an aqueous solution of NaCl at distances between their surfaces h = 1, 2, 5, 10, 15 nm. Construct a graph of the dependence Ue = f (h) for φ = 4 • 10-2 Β; T = 293 K; ε = 80.1; ε0 = 8.85⋅10-12 F / m; χ = 6 • 109 m-1.

Additional information

Questions and problems from the manual:
"Laboratory Workshop on Colloid Chemistry" Nekrasov AP, Veretenchenko BA, Kharkov NTU "KhPI", 2004
"Characteristic properties of disperse systems" Nekrasov AP, Kharkov, 1996
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