What was the purpose of using the rotary evaporator? How else could you have acc
ID: 565685 • Letter: W
Question
What was the purpose of using the rotary evaporator? How else could you have accomplished the same task, given enough time (that’s a hint!). Explain why your alternative method would work, and provide relevant data from your PC table.
Solubility 58.08 | L | 0.7845 -94.7 56.05 | 1.3588 2 msc H,O, EtOH, eth, ace, bz, chl 248 1.573H,0: mse al, eth vs ace, chl; s bz 249.2 15041 H,0: vs EtOH, eth; s ace, bz, chl 4 | anisaldehyde or 4-methoxy benzaldehyde l 136.4 122.12 S 1.2659 122.35 154.21 S 1.04 ! 1.1 1 92 68.93 2561 1.58877 HO; s EtOH, eth; vs bz, ete, MeOH 74.12 | L | 0.806 -88.5 99.5 | 1.39782, vs H2O: mise EtOH, eth, ace, bz; s chl 10 lcalcium chloride, anhydrous 98.4 14HO,s EtOH, eth, ace, bz, peth, chl 6 lethyl 4-aminobenzoate A s H:O, tfa;s EtOH, eth, HOAc 88.1060.9003 83.8 77.1113723 s H,mseEH, eth: vs ace, 98.19 L 0.697118.9 93.641.3998 H,O; s EtOH, eth, ace, bz, chl: sl ete 80.175 | L | 0.6606 .9535 68.73 | 1.3727 25 i H,(): vs EtOH: s eth, chl 2.3 hv drochloric acid. (1.44 M. 5 wt. % 32.04 | L | 0.7914 -97.53 64.6 | 1.3288 2 misc H2O. EtOH, eth, ace; vs bz; s chl 29 methyl 4-aminobenzoate 30 2-methyl-2-hexanol 137.02 | L | 1.2758 -112.6 101.6 | 1.4401 2 i H,O, mse EtOH, eth, ace; sl cte; s chl 136.15 S 1.0621 103.5 259.5121HO: vs EtOH, eth; s chl 22.99 S0.97 97.794 883 96.4g/100g H,OsEtOH 44|5% sodium carbonate (Na,CO,,0.615 M)| 106 | L | 1.0337 1.3795 21, 26%, 5.3M 46 sodium chloride. saturated 47 5% sodium hydroxide 48 sodium hypochlorite solution 49 sodium methanolate or sodium methoxide 54.024S 50 sodium sulfate. anhydrous 'ill s.llinir ail, eOM1t(Sil, % wi. %.) 317 M, 5 % Reac H,0: s MeOH, EtOH 28.1 H,O: i EtOHExplanation / Answer
In rotary evaporator we can do solvent evaporation from sample by decreasing its boiling point as a result of decreasing the pressure. As we know boiling point of a liquid decreases as we decrease the pressure. Hence solvents having high boiling point like DMSO etc can be evaporated at lower temperature. More over in rotary evaporator due to rotation of the round bottomed flask and simultaneous heating from water bath a thin film is formed hence the surface area is increased hence faster evaporation is achieved.
Given more time we can simply heat the solution in a beaker over bunsen burner and allow the solvent to evaporate on reaching its boiling point.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.