orgo2lab4recryss

orgo2lab4recryss - Objective The objective of this lab was...

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Objective: The objective of this lab was to recrystallize adipic acid and confirm the identity of the compound by IR spectroscopy and melting point range. (Wikipedia.com) Table of Pertinent Physical Properties Chemical Use Sodium Dichromate Limiting reagent Overall Reaction: 0.79eq Na 2 Cr 2 O 7 3 C 6 H 10 + 4 Na 2 Cr 2 O 7 + 16 H 2 SO 4 3 C 6 H 10 O 4 + 4 Cr 2 (SO 4 ) 3 + 4 Na 2 SO 4 + 16 H 2 O 14eq H2SO4 Procedure: Substance (include Structure) M.F. M.W, (g/mol) B.P. °C M.P. °C Grams moles mL Density (g/mL) Reactant and Main Reagent(s) 1) Cycloh exene C 6 H 10 82.14 82.8 - 0.811 0.019 2.0 0.8111 Sulfuric acid O S O H 2 SO 4 98.078 - - 27.6 0.281 15.0 1.84 Sodium dichromate. Dehydrate O Cr O O O O Cr O O Na + ) ( 2 Na 2 Cr 2 O 7 ·2H 2 O 298.02 - 356.7 4.5 0.015 - - Product Adipic Acid C 6 H 10 O 4 146.14 - 152 1 - - - -
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0.325g of adipic acid was transferred to a 30mL beaker and to it 4-5mL of hot water was added. The reaction was brought to a boil and solvent was added until the entire product dissolved. Once the beaker was removed from heat, it was allowed to cool to room temperature. It was then placed into an ice bath for about 15 minutes until crystals began to appear. Next, the solvent was filtered out, using a Hirsch funnel. Excess
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orgo2lab4recryss - Objective The objective of this lab was...

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