05
Mar
Preparation Of Benzoic Acid From Methyl Benzoate. Swirl the flask to mix the reagents attach a reflux condenser and gently heat the mixture at reflux for 45 min. Place both samples in labeled vials and give them to your TA. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy Safety How YouTube works Test new features Press Copyright Contact us Creators. A mixture of ethyl benzoate 2 ml and sodium hydroxide solution 15 ml 10 is refluxed in a round bottomed flask fitted with a water condenser on a water bath temp.
Theoretical yield of methyl benzoate expected using the following conditions. Place 61 g of benzoic acid and 20 mL of methanol in a 100-mL round-bottomed flask and carefully pour 2 mL of concentrated sulfuric acid down the side of the flask. Weigh the sample of recovered benzoic acid. The purity of the benzoate will then be determined using infrared spectroscopy. In this experiment you will prepare methyl benzoate by reacting benzoic acid with methanol using sulfuric acid as a catalyst. 90-100 oC for about 30 minutes till the ester layer disappears.
H2SO4 Benzoic acid Methyl benzoateThe mixture was decanted into a separatory funnel and the flask was rinsed with a small amount of diethyl ether C2H52O.
The remaining solution is acidified with HClaq to yield a precipitate of benzoic acid C 6H 5COOH. Cool this mixture in an ice bath for approximately 10 minutes. The purity of the benzoate will then be determined using infrared spectroscopy. Preparation of Methyl Benzoate. 199 collecting anything that boils between 170C and 200C. Would the amount of methanol and concentrated sulphuric acid be enough.