Molar conductivity ⋀ m   of aqueous solution of sodium stearate, which behaves as a strong…

Molar conductivity ⋀m  of aqueous solution of sodium stearate, which behaves as a strong electrolyte, is recorded at varying concentration(c) of sodium stearate. Which one of the following plots provides the correct representation of micelle formation in the solution?
(Critical micelle concentration (CMC) is marked with an arrow in the figures.)

Solution

With increase in concentration of sodium stearate λM decreases, but at CNC, formation of miceller take place and the λM decrease abruptly, this change in λM with respect to c is represented by plot. :

Asked in: JEE Advanced 2019 (Paper 1)

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