139. Задачка по химии №013 922

38. Calculate the energy of electrostatic repulsion of two spherical particles with a diameter of 200 nm in an aqueous solution of NaCl, if the potential of the diffuse layer ψ ´= 20 mV, parameter æ-1 = 1 / λ = 10-8 m, temperature T = 293, distance between particles h = 10 nm.

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