# Lab 05 analysis of aspirin by visible spectroscopy

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Lab 05 – Analysis of Aspirin by Visible Spectroscopy: Analysis of Aspirin by Visible Spectroscopynatoli, jaclynCalculations / ObservationsAbsorbance = -logT A= 2-log^%TAbsorbance of Solution1= -log(21.6%) = an absorbance of 2.67Determining Concentration for Solution1:4.00mg/mL * 5.00mL A.S./100mL FeCl3 = 0.200mg/MLDetermining the Concentration ratio:(concentration2)/ (concentration1) = solution 2's concentration ratio0.16/0.20= 0.8Determining mg of acetylsalicylic acid:mg of acetyllsalicylic acid in solution 2 = concentration ration for solution 2* (400mg)320 = 0.8* 400mgWhen lining up the solutions in order from 1-5 there was a gradual fade in darkness. Solution1 was darkbrown almost black and the solutions gradually lightened up in color until Solution5 was almost aburgundy red with brown and yellow tones.6 / 9
Lab 05 – Analysis of Aspirin by Visible Spectroscopy: Analysis of Aspirin by Visible Spectroscopynatoli, jaclynPost lab Questions:1) Indicate what the following errors would do to your results...
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Lab 05 – Analysis of Aspirin by Visible Spectroscopy: Analysis of Aspirin by Visible Spectroscopynatoli, jaclyn