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Unformatted text preview: !"# %%&’ (all %&&+ ,epartment of !5emistr8 9rganic !5emist ry Lab I Villanova University Page - 1 - of 2 Extraction, Distribution Coefficient Experiment 4A Calculation Worksheet A. Prepare the Standard Benzoic Acid Solution 1. Calculate the molarity of your standard Benzoic Acid (PhCO 2 H; Molecular Weight: 122.12) solution: 0.61g PhCO 2 H x 1 mole PhCO 2 H = .005 mole PhCO 2 H dissolved in 250 mL water Benzoic Acid 122 g PhCO 2 H (PhCO 2 H where Ph = C 6 H 5 ) M.W. = 122.12 .005 mole PhCO 2 H = X mole PhCO 2 H Solve for X: X = 0.02 mole PhCO 2 H in 1000 mL water or 0.02 M PhCO 2 H 250 mL water 1000 mL water B. Single 10 mL Extraction and Determination of Distribution Coefficient 1. Calculate amount of Benzoic Acid you are starting with: 50 mL 0.02M PhCO 2 H x 0.02 mole PhCO 2 H x 122.12 g PhCO 2 H = 0.122 g PhCO 2 H in starting aqueous solution. in starting aqueous solution....
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This note was uploaded on 02/20/2012 for the course CHE 118B taught by Professor Nasiri during the Winter '08 term at UC Davis.
- Winter '08