2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/27872We revisit the model of the two-component plasma in a gravitational field, which mimics charged colloidal suspensions. We concentrate on the computation of the grand potential of the system. Also, a special sum rule for this model is presented.7 pages, LaTeX2eStatistical Mechanicstext