PART A. PREPARATION OF SOLUTIONS FOR BEER LAW GRAPH COMPOSITION OF SOLUTION S The molar mass of acetylsalicylic acid is

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Part A Preparation Of Solutions For Beer Law Graph Composition Of Solution S The Molar Mass Of Acetylsalicylic Acid Is 1 (53.57 KiB) Viewed 8 times

Part A Preparation Of Solutions For Beer Law Graph Composition Of Solution S The Molar Mass Of Acetylsalicylic Acid Is 2 (43.55 KiB) Viewed 8 times

Part A Preparation Of Solutions For Beer Law Graph Composition Of Solution S The Molar Mass Of Acetylsalicylic Acid Is 3 (42.18 KiB) Viewed 8 times

PART A. PREPARATION OF SOLUTIONS FOR BEER LAW GRAPH COMPOSITION OF SOLUTION S The molar mass of acetylsalicylic acid is 180.16 g mol-1 Part A: Mass of acetylsalicylic acid data and molar concentration calculation Unrounded Rounded Mass of acetylsalicylic acid in 1 L solution 1.4286 ✓ 0.00792962 1. Molar concentration of acetylsalicylic acid 0.00793 x 0.00793 PREPARATION OF DILUTED SOLUTIONS TO BE USED FOR BEER'S LAW GRAPH Final volume is 50.00 mL for all solutions, including blank Part A: Volume data, ferric salicylate ion concentration calculation and absorbance data Trial Volume of solution Final volume 2. [Fe-salicylate ion] (mol L=¹) s (mL) (mL) Unrounded Rounded Blank ( FeCl, soln used to calibrate colorimeter) 0.00 0.00000 0.00 2.00 3.17185 x 104 3.17 x 104 2 3.00 4.75777x104 4.76×10 4.00 6.34369 x 104 6.34 x 10 0.000792962 7.97962-104 x 5.00 SAVED: ✔ 3 > > > > > 50.00 50.00 50,00 50.00 50.00 ✓ > > < ✓ 0.000793 ✓ ✓ Unit 9 mol L-1 Absorbance 0.000 0.205 0.262 0.419. 0,506 < > > >

E: 47% GRAPH CALCULATIONS Using the graph of absorbance vs [Fe-salicylate lon), complete the table below. Part A: Slope and intercept calculation Unrounded Rounded 3. Slope 666.678 667 4. y-intercept -0.0135714 -0.0136 YOUR PROGRESS ON THE PREPARATION OF SOLUTIONS FOR BEER LAW GRAPH CORRECT 20/ 22 POINTS AWARDED65/98 AUTOSOLVED PART B. ANALYSIS OF ASPIRIN TABLET ASPIRIN TABLET DATA Strength of aspirin tablet (mg acetylsalicylic acid) • Absorbance of aspirin solution. " ASPIRIN TABLET CALCULATIONS 5. Molar concentration of iron salicylate lon in 50 ml. volumetric flask (calculated using equation of line) 6. Molar concentration of iron salicylate lon in 250 SAVED:✔ volumetric flask (parent aspirin stock solution) Part B: Strength and absorbance of aspirin. Data ✓ 325 ✔ 0.229 ✔ Unrounded 0.000363851 0.0002579 x 0.00672610 Unit L mol Unitless 2 22 Unit mg Unitless NOT FINISHED Rounded 0.000164 0 41 Units mol L mol L

PART B. ANALYSIS OF ASPIRIN TABLET ASPIRIN TABLET DATA Strength of aspirin tablet (mg acetylsalicylic acid) Absorbance of aspirin solution ASPIRIN TABLET CALCULATIONS 5. Molar concentration of iron salicylate ion in 50 mL volumetric flask (calculated using equation of line) 6. Molar concentration of iron salicylate ion in 250 mL volumetric flask (parent aspirin stock solution) 7. Moles of iron salicylate ion in 250 mL volumetric flask (parent aspirin stock solution) 8. Calculated mass of acetylsalicylic acid in the tablet 9. Percent error in mass of acetylsalicylic acid in the tablet Part B: Strength and absorbance of aspirin Data * 325 0.229 Unrounded 0.000363851 0.0002579 x 0.00672610 A 6 01 6 Unit mg Unitless Rounded 0.000364 4 4 Units mol L-1 mol L-1 mol mg %