dissolve 1.33 g sodium bromide in 1.5 mL distilled water, using a stir bar. Add

Question

dissolve 1.33 g sodium bromide in 1.5 mL distilled water, using a stir bar. Add 0.80 g 1-butanol. Place water-condenser on round bottom flask. Turn on water, and then drop-wise add 1.1 mL concentrated sulfuric acid to this solution. Once you have finished adding the chemicals, heat to reflux and reflux for 40 minutes 1. We were unable to TLC our final product using UV light to see if it was pure because neither the starting material nor product are UV active. If we had, would we expect the Rf of the alcohol to be less than or greater than the bromobutane? (1) 2. Would increasing the polarity of the eluent (TLC solvent) increase or decrease the Rf? (1)

Explanation / Answer

Rf value of bromobutane is less than butanol 2) Increasing polarity of eluent increases the Rf values

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