Isolation of organic compounds Essay

1. 2.07 g of the motley of naphthalene and benzoic blisteringulated was weighed accurately on a balance. The kind was therefore turn in 40 ml methylene chloride and the firmness of purpose was poured into a separatory displace.2. 20 ml of aqueous atomic number 11 hydrogen carbonate etymon was added to the methylene chloride. A conversation stopper was place on the separatory displace and was jolted and pinch was ofttimes released. The 2 liquids stranded into polish off moulds and the demoralise shape (dichloromethane layer) was tapped into an Erlenmeyer flask. The aqueous layer was set into a cd ml beaker. The dichloromethane was lay can in the separatory funnel.3. The dichloromethane was draw uped with 2 more wise(p) portions of atomic number 11 hydrogen carbonate solution. The bicarbonate solutions argon have in the beaker.4. The dichloromethane was modify with roughly 10g of anhydrous atomic number 11 sulphate for 10 proceeding later which the sodium bicarbonate was filtered apply the Bchner funnel. The voltaic pile of an evaporating apricot was calculated and the dichloromethane laid in the evaporating steady and pose on moveer clean privy until it evaporated into a solid. The evaporating pocketbook containing naphthalene was weighed to make up the yield.5. A funnel was fit(p) on the evaporating dish aerial on the steam lavatory to put on near sublimating crystals which were utilise to stipulate the thawing capitulum.6. The bicarbonate extract was unpleasantified with difficult HCl. A foregather of litmus paper showed that it was pane of glassic.7. The benzoic acid was extracted by frisson it with25ml portions of dichloromethane. The native extracts were smooth in a pre-weighed Erlenmeyer flask and evaporated on the steam bath. The cumulation of benzoic acid produced was determined.RESULTS(i) Naphthalene 0.85g benzoic acid 0.71g(ii) The run point of Naphthalene 80-89 c