Titration of a Weak Acid Lab

Titration of a Weak Acid Lab - Stephanie Warner Chem 153...

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Stephanie Warner Chem 153 Shidong Chu 23 September 2005 Titration of a Weak Acid Purpose: The purpose of this lab is to determine the amount of acid in a solid by titrating the solid with a strong base. Calculations: Standardization: (0.9479 g KHP/ 204.22 g/mol) x (1 mol OH/1 mol KHP) = 0.003173 mol OH 31.89 mL NaOH x (1L/1000 mL) = 0.03389 L NaOH 0.003173 mol OH/0.03389 L NaOH = 0.09363 M NaOH Q Test for Standardization: 0.0982, 0.09813, 0.09363, 0.09379 (0.09813-0.09379)/ (0.09813-0.9282) = 0.871 0.09813 is an outlier. Average for Standardization: 0.09282 + 0.09363 + 0.09379 = 0.28024/3 = 0.09341 M NaOH Unknown Titration: 24.06 mL x (1L/ 1000mL) = 0.02406 L NaOH (0.02406 L NaOH)(0.09341 M NaOH)x(1 mol H + / 1 mol OH - )x(1 mol KHP/ 1 mol OH - ) = 0.002247 mol KHP [(0.002247 mol KHP)(204.22 g/mol)/ 0.9236 g Unknown] x 100 = 49.68% KHP Q Test: 49.97%, 47.25%, 49.68%, 49.99%, 49.49% (49.99-49.97)/ (49.99-47.25) = 0.0072 (47.25-49.68)/ (49.99-47.25) = 0.88 This means that 47.25% is an outlier.
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This lab report was uploaded on 04/15/2008 for the course CHEMISTRY 153 Lab taught by Professor Riechel during the Fall '05 term at Miami University.

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Titration of a Weak Acid Lab - Stephanie Warner Chem 153...

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