Potassium stearate is obtained by the saponification of an oil or fat. It has formula \[\frac{x+5}{1}=\frac{y+3}{4}=\frac{z-6}{-9}.\] The molecule has a lyophobic terminal \[\frac{x-2}{6}=\frac{y-4}{3}=\frac{z+1}{2}\]and a lyophilic terminal ? COOK. Potassium stearate is an example of