Lab Report Chemistry Lab

Since the Grignard reagent can easily react with water, all glassware including the 25 ml round bottom flask, magnetic stir bar, 3 and 5 ml conical vial, 50 mL Erlenmeyer flask, claisen adapter, drying tube and 5 glass pasteur pipets were first added to a 250mL beaker and placed in the oven for 30 minutes. After the completion of the thirty minutes, 0.150 g of shiny magnesium turnings and a stir bar was first added to the round bottom flask and the claisen adapter along with the drying tube packed with calcium chloride was added to one of the heads of the claisen adapter. A rubber septum was then added to the other head and the entire apparatus is placed on a hot plate at its lowest setting. Meanwhile, 20 ml of anhydrous diethyl ether was added to a 50 ml Erlenmeyer flask and sealed using a rubber septum.
A pasteur pipet was then used to transfer 4ml of anhydrous ether to the vial. The syringe was then utilized to transfer 0.8 ml of this solution and the reaction was allowed to proceed until the solution turns brown and cloudy. The conical vial was then rinsed with 2 ml of anhydrous ether to get any remaining solution into the reaction vessel. Simultaneously, 1.09 g of benzophenone and 2ml of anhydrous ether were added to a 3ml conical vial and gently stirred. The reaction vessel was taken off of the hot plate and allowed to cool. The benzophenone was then added to the reaction mixture while stirring vigorously. The conical vial was washed with anhydrous ether and transferred to the mixture. The reaction mixture is then transferred into a beaker and stored in a drawer after 15 minutes until next