State the purpose of cosolvent in preparation of benzoic acid solution
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Preparation of Benzoic Acid Solution :-
The purpose of this experiment is to prepare and analyze benzoic acid. It is also meant to demonstrate some general preparation methods, such as using a reflux apparatus, vacuum filter, and a hot gravity filter, plus determining melting point and titrating.
→ In this experiment benzoic acid was synthesized through the oxidation of benzyl alcohol by acidified potassium permanganate.
→ The alteration of our initial solution into crude crystals was observed through using a reflux apparatus, collecting and cleaning the crystals with a vacuum filter, recrystallizing again through reflux, and finally purifying with a hot gravity filter.
→ The melting point was examined, the percent yield calculated and the purification of the resulting crystals was discovered through titration with phenolphthalein.
→ Although the first trial was not successful, the second trial resulted in a percent yield of crude crystals of 32.1%, a melting point of 115°C, and a percent purity of 49.1%.
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