In general, for soaps, the concentration of surfactant at CMC is around $\mathrm{mol} \mathrm{L}^{-1}$.
In general, for soaps, the concentration of surfactant at CMC is around $\mathrm{mol} \mathrm{L}^{-1}$.
$10^{-4}$ to $10^{-3}$
$10^{-4}$ to $10^{-1}$
$10^{-7}$ to $10^{-4}$
$10^{-4}$ to $10^{+2}$
Solution
CMC is defined as concentration of surfactants above which micelles form and all additional surfactants added to the system will form micelles.
Concentration of surfactant is nearly $10^{-4}$ to $10^{-3} \mathrm{~mol} \mathrm{~L}^{-1}$ at CMC. CMC depends on temperature, pressure and concentration of other surface, active substances and electrolytes.