Surfactant molecules like sodium stearate form unique associated colloids (micelles) in aqueous solu — Surface Chemistry Chemistry Question

💡 Solution & Explanation

Surfactants act as normal strong electrolytes at low concentrations. They strictly aggregate to form protective micelles only when two critical thermodynamic thresholds are crossed simultaneously: the concentration must be above the CMC, and the temperature must be above the Kraft temperature ($T_k$).