- Calculate The Theoretical Yield Of The Preparation Using Equation 4 Calculate The Mass Of Aspirin You Prepared Calcul 1 (18.11 KiB) Viewed 22 times
- Calculate The Theoretical Yield Of The Preparation Using Equation 4 Calculate The Mass Of Aspirin You Prepared Calcul 2 (41.8 KiB) Viewed 22 times
- Calculate The Theoretical Yield Of The Preparation Using Equation 4 Calculate The Mass Of Aspirin You Prepared Calcul 3 (56.16 KiB) Viewed 22 times
1. Preparing Aspirin mass of weighing paper, 8 mass of salicylic acid plus weighing paper, 8 volume of acetic anhydride added, ml 7.42 3.62 5mL D. 2017 30.694 31.2607 mass of filter paper. 8 mass of watch glass, & mass of watch glans, filter paper, and crystals 8 11. Treating the Discarded Solutions for Disposal color of discarded solutions mixture immediately after addition of phenolphthalein solution yellow name and molarity of solution used to neutralize discarded solutions mixture yellow
Example Problem Calculate the percent yield IF 1.963 g of aspirin is produced from 2.198 g of salicylic acid and 4.0 mL of acetic anhydride. Solution (1) Calcidate the member of moles of salicylic acid present in the reaction mixture, using Equation 2. (Eq. 2) number of moles of salicylic acid, mol = (mass of salicylic acid), g)( 138.12 g salicylic acid 1 mol salicylic acid = (2.198 g salicylic acid mol salicylic acid (138.12 g salicylic acid = 1.591 x 10-7 mol (2) Calculate the mass of acetic anirydride used, using Equation 3. The density of acetic anhydride is 1.082 g/ml. of (Eq. 3) volume of density mass of acetic anhydride, 8-acetic anhydride, m) (acetic anhydride, g/ml.) (1.082 = (4.0 mL) 150 ml =438 (3) Calculate the number of moles of acetic anirydride present in the reaction mixture, using a modification of Equation 2. The molar mass of acetic anhydride is 102.09 g/mol. 1 mol acetic anhydride number of moles of acetic anhydride, mol - (4.3 g acetic anhydride) (102,09 g acetic anhydride = 4.2 x 10-2 mol (4) Based on the sitember of moles of acht rangent present and the stoichiometry of the reaction, determine the limiting ranchant for this preparation. Salicylic acid is the limiting reactant (5) Calculate the theoretical yield for this preparation, based on the number of moles of limiting reactant present and Equation 4. The molar mass of aspirin is 180.75 g/mol. aspirin (180.15 g aspirin 1 mol inspirin (Eq. 4) theoretical yield, & * 1 mol aspirin 160.15.g aspirin 1 mol aspirin number of moles of limiting reactant, mol (1.591 x 10-7 mol salicylic acid 1 mol salicylic acid 1) (1 mol molting ironctant e) G 2.866 8