Essay about The Mysterious Substances : Acid, Base, Or Neutral

941 Words Oct 19th, 2016 4 Pages
The Mysterious Substances: Acid, Base, or Neutral Procedure: Out of three substances, benzoic acid, ethyl-4-aminobenzoate, and acetanilide, two of them were randomly given out, weighing 75 mg each. These mysterious substances were both placed in a 25-mL flask with 6 mL of diethyl ether. The substances with the diethyl ether were mixed together until the solids dissolved. The solution was cooled in an ice bath for a couple of minutes. Once the solution was cooled, 3 mL of 3M HCl was added and swirled into the solution. The top of the 25-mL flask was capped and the two liquid were mixed in a thorough manner. Ventilation was required after every few seconds. After letting the solution sit for a while and letting the liquid layers separate, the bottom layer was removed by pipet and was transferred to another empty flask. Another 3 mL of 3M HCl was added to the diethyl ether and the same steps were repeated. With the new flask and the 6 mL of 3M HCl inside, 3mL of 6M NaOH was added into it. The solution sat in the ice bath for fifteen minutes. The solution did not produce any solids and was tested to see if it had turned basic by using PH test strips. The PH strips showed that it was still acidic and another 2 mL of 6M NaOH was added to the solution and cooled in the ice bath for an additional 15 minutes. During the cooling process, white solids were forming in the flask and an oil was forming on top of the liquid. The oil layer evaporated by letting the flask sit open for…

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