lmared absorptions The presence of these two peaks for an aromatic nitro aromati
ID: 986734 • Letter: L
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lmared absorptions The presence of these two peaks for an aromatic nitro aromatic ring. Recrystallization will be used to point will be used to characterize the product near 1350 and 1 group is critical for supporting the nitrat purify your product. Infrared an H2SO4 HNO3- NO2 Methyl benzoate methyl m-nitrobenzoate o Substance Methyl benzoate Methyl 2-nitrobenzoate Methyl 3-nitrobenzoate Methyl 4-nitrobenzoate MW. d/mL) M.P.C) BPQ Refractive Index 136.2 1.088 -12 181.2 181.2 181.2 199 1.5160 1.5340 -13 79 95 -nitrobenzoate 1812 Nitrating reagent (1:1 Concentrated Nitric acid/Concentrated sulfuric acid) Reagent alcohol SAFETY PRECAUTIONS Safety goggles are required for performing this lab exercise. Minimize the breathing of any vapors and skin contact of chemical reagents The Nitrating reagent is very strongly acidic and a very strong oxidizing agent. Hand extreme care. Wash any skin exposed to the nitrating reagent immediately, and tre paste of sodium bicarbonate. Handle hot lab items with proper protection. Dispose chemical waste according to your instructor's directions Wash your hands thoroughly when the lab exercise has been completed. Synthesis of Methyl m-Nitrobenzoate 1. Place 2 mL of nitrating reagent in a 5-mL, conical vial containing a spin vane. CAUTION: ACID MIXTURE IS HIGHLY AGGRESSIVE & CORROSIVE 2. Add 300 L of methyl benzoate into the 5-mL vial and seal vial with green cap and ex septum immediately ftir therraction mixture strongly for 30 minutes at room temperature.Explanation / Answer
We experience 'freezing point depression' when going from pure solvent to solution, i.e presence of solute (non-volatile).
In this case, as we have pure compound, so the vable reason for obtaining freezing point at a different temperature can be that some kind of impurity is present in the substance. It may have been possible that the impurity cme when we were synthesising nitrobenzoate.
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