Statement I Micelles are formed by surfactant molecules above the critical micellar concentration (CMC). Statement II The conductivity of a solution having surfactant molecules deceases sharply at the

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Statement I Micelles are formed by surfactant molecules above the critical micellar concentration (CMC). Statement II The conductivity of a solution having surfactant molecules deceases sharply at the CMC.

TestHub · Accepted Answer

At a certain concentration surfactant molecules start to aggregate and form micelle, the concentration is called critical micellisation concentration (CMC). Aggregation of surfactant molecules (ions; RCOO − ) micelle formation cause effective fall in number of free ions to conduct electricity, thus, conductivity decreases at CMC.

Chemistry - Surface Chemistry Question with Solution | TestHub

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