Langmuir adsorption isotherm is based on the assumption that every adsorption site is equivalent and that the ability of a particle to bind there is independent of whether nearby sites are occupied or not occupied.

According to Freundlich adsorption isotherm, in the median range of pressure

       $${x \over m} \propto {P^{{1 \over n}}}$$

$$ \Rightarrow $$  $${x \over m}$$ = kP$$^{{1 \over n}}$$

taking log both sides, we get,

log$${x \over m}$$ = logk + $${1 \over n}$$ logP

Here in graph between log$${x \over m}$$ and logP, slope is $${1 \over n}$$ and intercepts = log k.

Dodecyl trimethyl ammonium chloride is a cationic surfactant and forms micelles in aqueous solution above critical micelle concentration (CMC).

Triglycerides are lipids, hence these are hydrolysed by lipases to glycerol and fatty acids.