Synthesis Of Butyl Benzoate

Procedure
2.0ml of 1-bromobutane, 2.97g of sodium benzoate, 5.0ml of body of water and 4 drops of Aliquat 336 were placed into a 50ml bottomed flask. The categorisation was underwent reflux for 1 hr at nearly 120oC.
The commixture was cooled to the room temperature. 10ml of distilled water was added into the flask to dissolve the solid. The mixture was transferred to a separating funnel. The flask was rinsed by 15ml of dichloromethane (DCM). Some add up of anhydrous magnesium sulfate was added into the conical flask 3 with mixture.
A dry 25ml round-bottom flask was weighted. Mixture from conical flask 3 was transferred to the round-bottomed flask by filtration. The mixture was underwent rotary evaporation to remove DCM and the rest was final reaping. The unit of measurement round-bottomed flask with final product was weighted.

Results
mess hall of round-bottomed flask: 30.64g
Mass of round-bottomed flask with final product: 32.27g
Mass of product: 1.63g

Density of 1-bromobutane: 1.27g/ml
Volume of alcohol utilise: 2ml
MW of 1-bromobutane is 137gmol-1
so that, the mole of 1-butanol: (2mlx 1.27g/ml) / 137gmol-1
= 0.01854mol
Since the no. of mol of 1-bromobutaneto butyl benzoateis 1:1
So that, theoretically, usage of0.01854 mol of 1-bromobutanewould obtain 0.01854 mol of butyl benzoate.




In the experiment,
Mass of butyl benzoate: 1.63g
Density of butyl benzoate: 1.00g/ml
MW of butyl benzoateis 178 gmol-1
the mole of butyl benzoate: 1.63g / 178 gmol-1
= 0.0091573mol
Yield of butyl benzoatesynthesized= (0.0091573 mol / 0.01854 mol) x c%
= 49.39%

Questions
1.To remove phase transfer catalyst Aliquat 336 from the mixture, first water and dichloromethane (DCM) was used to dissolve catalyst into sedimentary phage. imputable to catalyst in hard to dissolve by its own, DCM is historic for dissolving it. By removing the aqueous layer, catalyst would be withdraw at the same time. In further removal of aqueous layer, such as by dehydrating agent, catalyst can be mostly...If you want to get a full essay, order it on our website: Orderessay



If you want to get a full essay, wisit our page: write my essay .