help needed for answering the following last 5 questions, any help is appreciated! :) The molar mass of acetylsalicylic acid is 180.16 g mol 1Part A: Mass of acetylsalicylic acid data and molar concentration calculationUnroundedRoundedUnitMass of acetylsalicylic acid in 1 L1.5739gsolution1. Molar concentration of acetylsalicylic0.008763100.00876mol L-1acidPart A: Volume data, ferric salicylate ion concentration calculation and absorbance dataTrialVolume of solutionFinal volume2. [Fe-salicylate ion] (mol L¯!)AbsorbanceS (mL)(mL)UnroundedRoundedBlank (FeCl3soln used0.0050.000.000000.000.000to calibratecolorimeter)12.0050.003.50500 x 1043.51 x 1040.2613.0050.005.25700 x 1045.26 x 10-40.37634.0050.007.01000 x 1047.01 x 1040.5235.0050.008.76300 x 1048.76 x 1040.6566.0050.000.001051501.05 x 1030.778Part A: Slope and intercept calculationUnroundedRoundedUnit3. Slope749.7507.50 × 102L mol--0.002418724. y-intercept6.80000× 103-0.00242Unitless Strength of aspirin tablet (mg acetylsalicylic acid)500mgAbsorbance of aspirin solution0.191UnitlessASPIRIN TABLET CALCULATIONSPart B: CalculationsUnroundedRoundedUnits5. Molar concentration of iron salicylate ion in 50 mLvolumetric flask (calculated using equation of line)A4mol L6. Molar concentration of iron salicylate ion in 250 mLvolumetric flask (parent aspirin stock solution)6.4mol L-17. Moles of iron salicylate ion in 250 mL volumetric flaskmol(parent aspirin stock solution)8. Calculated mass of acetylsalicylic acid in the tablet6.mg9. Percent error in mass of acetylsalicylic acid in the%tablet

Equation obtained from calibration curve is- y = 749.750x -0.00241872 5. Absorbance = y = 0.191 So,…

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)

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)

Principles of Instrumental Analysis

7th Edition

ISBN:9781305577213

Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

Publisher:Douglas A. Skoog, F. James Holler, Stanley R. Crouch

ChapterA1: Evaluation Of Analytical Data

Section: Chapter Questions

Problem A1.22QAP

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