1- Use a centigram balance to weigh a 50 mL Erlenmeyer flask.Turn on the aspirator and transfer the aspirin slurry into the funnel.In the fume hood, the instructor will
transfer 5.0 mL of acetic anhydride from a burette into the flask.3- While the flask is still in the water bath, slowly add 2 mL of distilled water to the
flask to decompose any excess acetic anhydride.2- Clamp the flask in a beaker of tap water supported on a ring stand over a burner
flame.Place
the filter paper in the funnel and moisten with distilled water from a squirt bottle.6- Set up a Buchner funnel on a vacuum flask connected to a water aspirator.Place about 2 g of
salicylic acid in the flask and weigh again.Add 5 drops of 85%
phosphoric acid (catalyst) to the flask.