Membranes / Nonequilibrium Phenomena / Streaming Potential / Thermodynamics / Transport Properties The streaming potential Δϕ which arises between the uni‐univalent electrolyte solutions of the same concentration separated by nafion 125 membrane in the presence of a pressure difference ΔPapplied across the membrane has been studied. Different electrolytes have been studied, namely NaCl, LiOH, NaOH, KOH and CsOH. — The quantity Δϕ/ΔPincreases in the order Li > Na > K > Cs. According to the non‐equilibrium thermodynamic theories the ratio (Δϕ/ΔP)/Jv/I), withJv (volume flow)/I(electrical current flow) the electroosmotic quantity, approaches unit.
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Scibona et al. (1989) studied this question.
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