Critical micelle concentration for a soap solution is `1.5xx10^(-4)` mol `L^(-1)` .Micelle formation is possible only when the concentration of soap solution in mol `L^(-1)` is

Options

A. `2.0 xx 10^(-3)`
B. `4.6 xx 10^(-5)`
C. `7.5 xx 10^(-5)`
D. `1.1 xx 10^(-4)`

Answer

A

Explanation

(a): Micelles formation takes place above the critical micelle concentration which is `1.5 xx 10^(-4)` mol `L ^(-1)` (given). Therefore, micelle formation is possible only when the concentration of soap solution will be` 2.0 xx 10^(-3)` mol `L^(-1)`.