1-264 Table 2. Determination of Acetylsalicylic Acid in Aspirin. 1) Aspirin Brand (and amount of acetylsalicylic acid on label) 2) Average molar concentration of NaOH Solution B (from Part A) 3) Mass of aspirin tablet 4) Mass of pulverized aspirin sample 5) Initial buret reading 6) Final buret reading 7) Volume of NaOH Solution B added 8) Moles of NaOH 9) Moles of acetylsalicylic acid in sample 10) Mass of acetylsalicylic acid in sample 11) Amount of acetylsalicylic acid per tablet S Basic 825 mg 0.0975 M Trial 1 Trial 2 1.254 1-242-247 25. 5.20 14.3 12) Mean amount of acetylsalicylic acid per tablet 13) Standard deviation for acetylsalicylic acid per tablet 14) RSD for acetylsalicylic acid per tablet 15) Relative percent error (%) 16) Is the mean amount per tablet acceptable? (Yes or no.) Trial 3 5.30 15-7 16.9 0.0153 0.0164 0.0153 0.0164 0.0139 0.0139 0.025042 0.027564 0.029546 10.0248 10.0271 0.0292 251 4.00 00616 0.02997 Show all calculations related to Trial 1, standard deviation, RSD, and relative % error. Mole of NaOH (0.0975) (14.3) = 0.000139 (0.0975) (15.7) = 8.000 153 - 164 Mass of ocelysalicylic acid ³ 0.000139 & 180-16g=0.0250 42 2 mel 0.000153 & 180.kg = 0.027564 48-65% 180.158 nd -0.000 164 # 180.16g = 0·029546 Amount of Acid Per Toblet : 0.0250 42 / Tablet (1.254g sample /1.264g tablet) = 0.0248 Mean amount Pay totolet (0.0248 +0.0271 +0.0292) g / 3 = 0.0616 Standard deviation ( rial to te t

Chemistry: Principles and Practice

3rd Edition

ISBN:9780534420123

Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer

Chapter4: Chemical Reactions In Solution

Section: Chapter Questions

Problem 4.9QE: Addition of water to concentrated sulfuric acid is dangerous because it generates enough heat to...

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Transcribed Image Text:ame: Table 2. Determination of Acetylsalicylic Acid in Aspirin. 1) Aspirin Brand (and amount of acetylsalicylic acid on label) 2) Average molar concentration of NaOH Solution B (from Part A) 3) 4) 5) 6) Mass of aspirin tablet Mass of pulverized aspirin sample Initial buret reading Final buret reading 7) Volume of NaOH Solution B added 8) Moles of NaOH 9) Moles of acetylsalicylic acid in sample 10) Mass of acetylsalicylic acid in sample 11) Amount of acetylsalicylic acid per tablet T₁ 1.264 12) Mean amount of acetylsalicylic acid per tablet 13) Standard deviation for acetylsalicylic acid per tablet 14) RSD for acetylsalicylic acid per tablet 15) Relative percent error (%) 16) Is the mean amount per tablet acceptable? (Yes or no.) 0.000153 * 180. Kg Imol T₂ √3 1.261 1-259 Seat กา Basic 8.25 mg 0.0975 M Trial 1* Trial 2 *Show all calculations related to Trial 1, standard deviation, RSD, and relative % error. Mole of NaOH (0.0975) (14.3) = 0.000139 (0.0975) (15.7) = 8.000 253 23 0.0975) (16.9) - 000164 Amount of Active Ingredient in Aspirin v5 1.254 1-2421-247 25. 5.20 14.3 15-7 16.9 0.0139 0.0153 0.0164 0.0139 0.0153 0.0164 0.02 50.42 0.027564 0.029546 10.0248 10.0271 10-0292 0.0 616 0-02997 5.30 Mass of ocelysalicylic acid 0.000139 &18)-16g=0.0250 42 2 mel 180. Kg = 0.027564 Trial 3 Ba 25 30 4.00 48-65% 180.158 * 180.16g = 0.029546 0-000 164 * 180 Imol 0.0250 42/Tablet * (1.254g sample /1.264g tablet) Amount of teid Per Tublet = 0.0248 Mean amount Pay tablet (0.0248 +0.0271 +0.02921 g/3=0-0616 Standard deviation ( nd 15 rial ;) to ted in ct the

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