Write a mathematical expression showing relationship between the amount of solute adsorbed per unit mass of the solid adsorbent and the concentration of the solution in the solution.

Explanation

To express the relationship between the amount of solute adsorbed per unit mass of the solid adsorbent and the concentration of the solution, we can refer to the Freundlich adsorption isotherm. Here’s a step-by-step derivation:

### Step 1: Define the Variables
- Let \( x \) be the amount of solute adsorbed (in grams).
- Let \( m \) be the mass of the solid adsorbent (in grams).
- Let \( C \) be the concentration of the solute in the solution (in grams per liter).

### Step 2: Express the Amount Adsorbed per Unit Mass
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