Write a procedure You don\'t need to look up any information, it is all here. th

Question

Write a procedure You don't need to look up any information, it is all here. that you have used this semester (or anything you can think of) your equipment bos or Reaction time 16 hours at reflux Workup: 5% Nal icofaq) (Recrystal izs) from toluere Purification: O Ho- viscous HO-S-OH clear CH3(CH2)10CH2OH+HO2C(CH2)16CH3 dodecanol C12H2sOH colorless white Stearic acid liquid sulfuric acid (catalyst) dodecyl stearate liquidesl crystals C17H33CO2H Amoun 1001 FW = 284.48 * dodecanol is CoH0 pale white FW4528 FW= 186.33 BOTH a Literature: MP- 41.aPc d = 0.833 BP = 261°C Amount used Amount used reactant and the Experimental: MP-40A-41 ( 375 k 5 mg solvent Workup is everything, you do w is over. extractions, purificatiow 6.00 m

Explanation / Answer

Into a round-bottomed (rb) flask, add 6.00 mL volume of dodecanol and 375 mg of stearic acid. Add 100 microL volume of concentrated sulfuric acid (caution!) and swirl the flask to mix the contents. Allow the reaction mixture to reflux for 16 hours.Cool the solution, decant it into a separatory funnel containing water, and rinse the flask with diethyl ether. Add this ether to the separatory funnel, shake thoroughly, and drain off the water layer, which contains the sulfuric acid and dodecanol.Wash the ether in the separatory funnel with 5% sodium bicarbonate to remove the unreacted stearic acid. Again shake, with frequent release of pressure by inverting the separatory funnel and opening the stopcock, until no further reaction is seen; then drain off the bicarbonate layer into a beaker. Wash the ether layer in the separatory funnel with saturated sodium chloride solution, and dry the solution over anhydrous Sodium sulphate in an Erlenmeyer flask. Remove the ether by evaporation or using a rotary evaporator. Recrystallize the dodecyl stearate from toluene and weight the compound after the formation of crystals. The weight of dodecyl stearate crystals should be 492 mg.

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