A) Standard solution and Beer's law calibration curve1-Fill in the following table :Concentration For S.1 M. x V. =M, x V 0.000725 x 1.0ml = M, x 10.0mlSolutionAbsorbanceConcentrationS. 10.1540.5240.7890,9890.2590.0000 7250.000 2530.000 4870-0000 725???? 0.0000552S.2S.3S4ASA of unknown2- Plot a graph of Absorbance vs. conc mol/LabsorbanceAbsorbance vs. Concentration1.6141.210.80.6OY-Values0.40.22.10conc 10 mol/ LB) Analysis of unknown aspirin tablet1. Mass of aspirin tablet-2. Concentration of ASA unknown from calibration curve ..mol / L3.. Conc of Stock ASA unknown-50 mL/ 1.5 mL (D.F) x Conc of ASA unknownmol/L4. Moles of ASA in 100 mlL solution Conc of Stock ASA unknown x 0.1 L-moles5.Mass of ASA - moles ASA x Molar Mass ASA (180 g/ mol)-6.% of ASA in aspirinMass of ASA/ Mass of aspirin tablet x100 > Data Set Exp.5Use the following data to determine the masspercent of the active ingredient in Aspirina) Preparation of solutions:volume of salicylic acidvolume ofFECL3 solution1ml3.5mlSA19mlSA26.5mlSA36.5ml3.5mlSA41ml9mlThe concentration of salicylic acid= 0.000725Mb) Preparation of “STOCK ASAUNKNOWN"The mass of aspirin= 0.135The volume of stock solution of aspirin= 100mlgThe dilution factor for the stock solution= 50/2Molar mass of SAS = 180.157 g/molec) Measurements of Absorbance:SolutionAbsorbanceSA10.154SA20.524SA30.789SA40.989The unknown sample0.259Answer the following questions:1. Name the active ingredient present in theaspirin tablet.2. What is the chemical name of Aspirin tablet?3. Name the solution which is used for makingintense violet colour with ASA.

Answered: Image /qna-images/answer/db5fd2df-80f3-472e-a632-58ff4e736160.jpg

A) Standard solution and Beer's law calibration curve 1-Fill in the following table : Concentration For S.1 M¸ x V, M, x V 0.000725 x 1.0ml M, x 10.0ml Solution Absorbance Concentration S. 1 0.0000 725 S.2 0.524 0.789 0,989 0.259 0.000 253 0.000 487 0.0000725 ??? 0.0000552 S 3 S.4 ASA of unknown 2- Plot a graph of Absorbance vs. conc mol/L absorbance Absorbance vs. Concentration 16 14 1.2 0.8 0.6 OY-Values 0.4 0.2 2. 10 conc 10 mol/L B) Analysis of unknown aspirin tablet 1. Mass of aspirin tablet-

A) Standard solution and Beer's law calibration curve 1-Fill in the following table : Concentration For S.1 M¸ x V, M, x V 0.000725 x 1.0ml M, x 10.0ml Solution Absorbance Concentration S. 1 0.0000 725 S.2 0.524 0.789 0,989 0.259 0.000 253 0.000 487 0.0000725 ??? 0.0000552 S 3 S.4 ASA of unknown 2- Plot a graph of Absorbance vs. conc mol/L absorbance Absorbance vs. Concentration 16 14 1.2 0.8 0.6 OY-Values 0.4 0.2 2. 10 conc 10 mol/L B) Analysis of unknown aspirin tablet 1. Mass of aspirin tablet-

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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