Lab 5 Acid/Base Extractions Essay

The purpose of this experiment is to separate either the organic origination (amine) or organic pane (carboxylic acid) from a mixture that contains inorganic impurities (salt) by performing a liquid-liquid extraction and then taking a thaw point.Key Experimental Details and ObservationsOur starting material, Compound B, was a mulct blanched powder and weighed 0.535g. The final product was a shiny white sheet that resembled acrylic paint and weighed 0.109g.ResultsOur percentage yield was 0.109g/0.535g x light speed = 20.4%.Discussion and ConclusionsThe break up point ranges we got for entangled B ranged from 110.8-114.0 C, while the liquescent point range for benzoic acid is 121.0-123.0C and 103.0-107.0C for 4-amino acetophenone. Since the ranges we acquired for compound B are directly in between both acid and base melting points, we can conclude that the ingenuousness for compound B is relatively high due to the compound being made up of equal parts of benzoic acid and 4-a mino acetophenone. Thus saying that our melting point ranges are fairly accurate because they exemplify an equal percent of both compounds, which is exactly what compound B is made up of. The purity can also be concluded through the melting points natural depression because depression arises from impurities within the lattice of a crystalized sample.We acquired a percent yield of 20.4%, which is relatively low. This result could be from part of the compound B solution being left behind in the Erlenmeyer flask when burbly the solution into the vacuum filtrate. The efficiency of a liquid-liquid extraction is high because it did provide us to gain some of our starting product back.We were able to assign the acid from the base by deprotonating the solution with 10mL of NaOH. This caused the benzoic acid to steady down at the bottom of the separatory flask because the NaOH broke it into ions, which made the acid polar. We then protonated the solution by adding HCl, which cause the a cid to separate from the solution.