Determine the Partition Coefficient(Kpc) of a Weak Acid Through Titration

Welcome back to the lab! In this comprehensive physical chemistry tutorial, we break down the step-by-step procedure for determining the partition coefficient (distribution ratio) of a weak acid between two immiscible phases (aqueous and organic solvents) using acid-base titration. Whether you are studying advanced physical chemistry at the university level or preparing students for advanced practical examinations, this video covers the core theory, experimental setup, data collection, and precise calculations required for accurate results What You Will Learn in This Video: Theoretical Foundation: Understanding Nernst's Distribution Law and how solute dissociation and pH affect the partition coefficient (K pc). Experimental Setup: Preparing the organic and aqueous phases, ensuring proper equilibration, and separating the layers safely. Titration Techniques: Standardizing solutions and titrating both phases to determine equilibrium concentrations of the weak acid. Data Analysis & Calculations: Step-by-step walkthrough of the formula, accounting for acid dissociation (Ka) in the aqueous layer. Common Sources of Error: Tips and troubleshooting to ensure high precision and reproducible results in your practical reports.