To purify the 500 grams of crude aspirin containing impurities such as acetic acid and sulfuric acid, we can use a combination of recrystallization and filtration techniques. The steps involved in the purification process are as follows:1. Dissolution: First, dissolve the crude aspirin in a minimal amount of hot solvent, such as ethanol or ethyl acetate. The choice of solvent is crucial, as it should dissolve the aspirin at high temperatures and allow it to recrystallize at lower temperatures. For this process, you will need a heating mantle, a round-bottom flask, and a magnetic stirrer.2. Hot filtration: To remove any insoluble impurities, perform hot filtration using a Büchner funnel and filter paper. This step will help to separate any undissolved impurities from the aspirin solution.3. Cooling and recrystallization: Allow the filtrate to cool slowly to room temperature. As the solution cools, the aspirin will begin to recrystallize, leaving behind the soluble impurities such as acetic acid and sulfuric acid in the solvent. To further enhance the recrystallization process, you can place the solution in an ice bath or a refrigerator.4. Cold filtration: Once the recrystallization is complete, perform cold filtration using a Büchner funnel and filter paper to separate the purified aspirin crystals from the solvent and any remaining soluble impurities.5. Drying: Transfer the purified aspirin crystals to a clean, dry watch glass or a drying oven to remove any residual solvent. Ensure that the drying process is gentle to avoid decomposition of the aspirin.6. Weighing and calculating percent yield: After the purified aspirin is completely dry, weigh the final product and calculate the percent yield based on the initial mass of crude aspirin.Percent yield = mass of purified aspirin / initial mass of crude aspirin x 100Assuming that the purified aspirin has a mass of 495 grams, the percent yield would be:Percent yield = 495 g / 500 g x 100 = 99%This purification process should result in a final product with a purity of at least 99.5%, depending on the efficiency of the recrystallization and filtration steps.