Investigating The Unknown Mixture Of Two Compounds Essay

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This experiment was conducted to practice a variety of techniques in organic chemistry: separation, mechanisms, acid-base reactions, evaporation, recrystallization, and identification. The goal of this experiment was to identify the unknown mixture of two compounds. The two compounds were separated first by altering the acid components solubility through deprotonation, and then protonating the acid component again to form the separated precipitate. The ether in the neutral layer was evaporated, and the residue was recrystallized. The crystals were subject to a melting point analysis, which involved identifying the melting point ranges on the unknown samples, and compared them to the ranges on known samples of possible compounds. The compounds that matched the sample were then tested through a mixed melting point that ensured proper identification and whether impurities were present in the isolated compounds. The compounds were found to be benzoic acid and benzoin. TLC was then conducted to determine if impurities were present. The IR spec was then conducted to ensure proper identification of the isolated unknown compounds, and all tests concluded that unknown A/N12 was benzoic acid and benzoin.
The separation and identification of an organic neutral compound and an acid was a useful technique to practice use of the separatory funnel, recrystallization, melting point identification, and TLC. IR spectroscopy was introduced and will be important throughout the study of organic…

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