Exam 1 practice (1)

5 add a drying agent mgso4 or na2so4 to the combined

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Unformatted text preview: and extract again with a new portion of organic solvent. Add the new organic layer to the layer already set aside. 4. Repeat step 3 one more time. 5. Add a drying agent (MgSO4 or Na2SO4) to the combined organic layers in order to remove water. 6. Filter off the drying agent. 7. Remove the solvent on the rotovap. All that should be left is purified fluorene. 3 Periodic Table of the Elements 1 1 2 H H He 1.00794 4.002602 1.00794 3 4 5 6 7 8 9 10 Li Be B C N O F Ne 6.941 9.012182 10.811 12.0107 13 14 15 16 17 18 Al Si P S 32.066 Cl Ar 35.4527 39.948 32 33 34 35 11 12 Na Mg 22.989770 24.3050 19 20 K Ca 39.0983 37 26.981538 21 23 22 24 26 40.078 V 44.955910 47.867 50.9415 55.845 58.933200 38 39 40 41 42 43 44 45 46 Rb Sr Y Zr Nb Mo Tc Ru Rh 85.4678 87.62 88.90585 91.224 92.90638 95.94 (98) 101.07 55 56 57 72 73 74 75 76 102.90550 77 Cs Ba La Hf Ta Fe 29 28 Ti 138.9055 Mn 27 Sc 132.90545 137.327 Cr 25 51.9961 54.938049 W R...
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