Ah, the Freundlich isotherm—it's that old model we use to describe how pesticides, like atrazine, stick to soil particles. The 1/n is the heterogeneity factor; a lower value means more diverse adsorption sites. You plot log q<sub>e</sub> against log C<sub>e</sub> to get a straight line. Honestly, I've spent khara too many hours plotting these in the lab, only for our Manipuri clay samples to never fit perfectly because *pukning* of the soil here isn't captured by just 1/n—the organic matter from our own backyard changes everything.
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