Title: Experiment 2: Synthesis of Aspirin Pre-lab questions: Compound Molecular weight Hazards Density Melting point Salicylic acid 138.12 Irritating to eyes and skin. 1.081g/mL (20C) -73 C By calculating the theoretical yield based on the original amount of Salicylic acid, one could determine the actual yield percentage of the reaction.
The pre-lab is completed before performing the experiment and will be turned in at the beginning of lab. 7. Weigh the dry product to obtain the yield of the reaction. SYNTHESIS OF ASPIRIN Pre-Lab Assignment Study the sections related to stoichiometry and limiting reactant in your textbook. for salicylic acid, acetic anhydride and acetylsalicylic acid. Day 2 – Analysis/Melting Point 1. 8. It uses the same template for every experiment and can be found on BB. RELATED WORK: Synthesis of Aspirin Lab Report . 1) A student prepared aspirin using 2.019 g of salicylic acid and 5.2 mL of acetic anhydride (d = 1.08 g/mL). If you need guidance, follow the steps in the Report Sheets. X 156-161 C Acetic anhydride 102.09 Corrosive, flammable, irritating to eyes and skin. During the preparing aspirin lab activity, a student attempts to determine how much aspirin she made. It is safe to discard of the filtrate down the sink with water. She looked back at her data: mass of flask 73.86 g _ mass of flask and salicylic acid 77.88 g __ Preparation of Aspirin Lab Report. Toxic if inhaled. For more information, see Pre-Lab Report Template page. Pre-lab exercise Preparation of Aspirin (Complete and check answers before coming to lab) 1. Write the chemical formulas (determine the values of x, y, and z in the formula CH,O.) An ester is a compound that is formed when an acid reacts with an alcohol, -OH group. Synthesis and Characterization of Aspirin Purpose The purpose of this lab was to synthesize Aspirin and measure the synthesized Aspirin’s purity. -In the synthesis of aspirin, you will treat salicylic acid with acetic anhydride-In order to proceed, the reaction requires an acid catalyst - phosphoric acid -In this lab, we will be using 90% of our salicylic acid to synthesize aspirin Calculate the theoretical yield and a. The structures for these compounds are shown in equation 16-1 of this lab … Aspirin is an organic ester. Toxic if inhaled. Transfer the filter paper and aspirin to a pre-weighed watch glass and allow to air dry in your locker until the next lab period. Introduction: The purpose of this experiment was to make aspirin via esterification, and to determine the percent yield we as a lab group made. Synthesis of Aspirin Prelaboratory Assignment Name and Drawer Number 1. Below you will find the the pre-lab broken down into sections for Experiment 21 - Synthesis of Aspirin.